VSEPR Theory: Introduction

Published on August 1, 2012 by

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This is an introduction to the basics of VSEPR Theory. VSEPR theory is a set of rules for how to look at a Lewis structure and determine the three dimensional (3D) shape of a molecule. The shapes have to do with the location of bonds and lone electrons pairs. In this video, we'll look at the following shapes: linear, trigonal planar, bent, tetrahedral, and trigonal bipyramidal

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  • Fareeha Saeed 10 years ago

    hey sir
    i dont know ur name
    but i am highly obliged that u r making such helpful videos
    pls keep it going
    dont stop it
    its helpful for the students who cant afford tuition like me
    thanks again
    i want to request u to further explain how air pressure effects us
    or what is the prove that atmospheric pressure is forced on us coz we dont feel it
    thanks again

  • Tyler DeWitt 10 years ago

    i already have a video on this topic. it’s called “atmospheric pressure.” thanks for the kind comment, and good luck!

  • Farah 10 years ago

    Thank you soo much for uploading this video! I’ve gained the confidence to answer the questions in this chapter 😀 Oh, and I can’t seem to find the videochemistrywebsite 🙁 Has the website been taken down?

  • lobe1028 10 years ago

    Awesome video!

    ps: I think you mean 120 degree between each bond in the trigonal planer 7:51…Right?

  • Tyler DeWitt 10 years ago

    thanks for pointing that out! i just made a video annotation so that it’s clear that it should be 120º.

  • Ghost572 10 years ago

    Thanks for all these video you’ve been uploading, you’ve helped me so much to understand science without having to listen to waffle!

  • Abhijeet Shukla 10 years ago

    kkkkkkkkkeeeeeeeeeeeeeeeeeeppppppppppppppp uploading

  • Lisa Raucci 10 years ago

    @ 1:36 you say opposite charges repel, I think you mean “like charges repel.” Great video though!

  • naturemanmatt 10 years ago

    Thanks for the video. You explain it very well. The props work wonders!

  • evolutionofremix 10 years ago

    Wow, such a helpful video, thanks!

  • Youssef Azami 10 years ago

    rock on !

  • khatantuul batbold 10 years ago


  • SwedishSpeedstarMPS 10 years ago

    You are literally a life saver. Someone give this man a drink

  • BB MM 10 years ago

    that’s solid man. you jus explained erry thing in 20 min. my proff was tryna do it for 2 weeks. 2 thumbs up!!

  • Nahu Dimitri 10 years ago

    How can you not like this video, you saved my chem grade!!!

  • mo hussain 10 years ago

    So helpful thank you

  • Benjamin Bezemer 10 years ago

    you sound like you would be a responsible father..

  • German-American 10 years ago

    your two cameras are distracting

  • Tyler DeWitt 10 years ago

    tough. don’t watch it if you don’t like it.

  • German-American 10 years ago

    You’re not a big fan of constructive criticism, are you?

  • German-American 10 years ago

    The videos are awesome. i tried thenewboston and khan. i prefer you over them any day of the week. i also appreciate your work A LOT. however, seeing you gesticulate is distracting for me and thus MIGHT be for a lot of others too.
    I thought your goal was to reach as many people as possible and maybe to monetize your work eventually. In that case you should ask your “customers” what they think. In any case it’s not a big deal and I’ll keep watching your stuff and hope you’ll add more.

  • German-American 10 years ago

    btw: will your webpage be up again? is there another way to see a list of your videos in order?

  • Alexander Funk 10 years ago

    Excellent models, great explanation, very clear, and enjoyable. You rock!

  • tuurtaburco 10 years ago

    i dont usually comment on YouTube but i must YOU SIR ARE a blessing from God and keep in mind i appreciate your work. it has helped a lot…ignore those 14yr olds who crticizing your hardwork.

  • anthropologie14 10 years ago

    1:40… Opposite charges attract, like charges repel. Otherwise very good video, love the two cameras

  • Sumi Akhter 10 years ago

    thank you so much!!!!!

  • Russell Johnson 10 years ago

    ur the only person i could understand from without ODing on adderall! LOL! thanks a lot u made the biggest difference in my grades and continue to do so! (:

  • spencer trinca 10 years ago


  • Angela Heymerdinguer 10 years ago

    I cannot express my gratitude for your videos. My college professor is brilliant, but, sadly, not a very good teacher. You explain things so thoroughly and carefully. Can you share about yourself? ie, where did you go to school? Why you decided to help out those of struggling so much with some of these concepts? Thank you again!

  • Stephen Cook 10 years ago

    Great video. Couldn’t really follow my professor when he was lecturing about this, but you explained it in a clear and concise way that I could easily understand. Good work!

  • tftislove 10 years ago

    Thank you so much!!

  • Ho Jia Jing 10 years ago

    Dear sir, i am studying a diploma in chemistry and your videos are really helpful. I sincerely do think that you are knowledgeable and passionate about the subject. I also admire the amount of effort placed in each video to help us students learn. You carry out your lessons professionally and your 2 angle camera makes it really personal!

  • qais jan 10 years ago

    safe dude

  • Isabel Morales 10 years ago

    I’m a chemistry teacher in a high scholl, I think this video is fantastic, it can help students to learn
    Chemistry, very thanks.
    It is a FANTASTIC video.
    sorry for my english, I’m spanish

  • carolinesunshinee 10 years ago

    my chemistry prof sucks at explaining, so thank youu so much! really helpful with all the props and stuff. THANK YOUUUUU

  • SHIHAB R. 10 years ago

    is there a certain order i should watch these VSEPR videos??? i really do want to grasp these concepts!!!!!!!!!!!

  • Tyler DeWitt 10 years ago

    1) Start with this video.
    2) VSEPR Theory Practice Problems.
    3) VSEPR Theory: Common Mistakes.
    4) VSEPR Theory: Trigonal Bipyramidal Family
    5) VSEPR Theory: Octahedral Family
    6) VSEPR Theory Practice Problems: Advanced

  • mojiganga2 10 years ago

    you are awesome!! thank you so much for these videos… my college prof sucks… you rock!!

  • Caleb Choueiri 10 years ago

    lol how ehehehe just focus on one at a time

  • Caleb Choueiri 10 years ago

    hella helpful

  • Caleb Choueiri 10 years ago

    lol that was just criticism, there was no constructive aspect of that ahah

  • dusushdwidb dcjeyd 10 years ago

    you’re a life saver.

  • Magnolia E 10 years ago

    ur awesome!!!

  • Michael Akinsanya 10 years ago

    All I can say is Wow You are a good teacher. I wish you were my professor, please keep up the great work you were doing for improving academic education.

  • 1malakian 10 years ago

    Your videos are helping me so much thanks.

  • Suki Hyman 10 years ago

    …also you’re beautiful!

  • Nersius 10 years ago

    1) make your video a window
    2) click and drag window to the side until the right is no longer showing

  • Melanie Lyons 10 years ago

    I like your videos. I have been sharing with my students when they need extra help. Any plans to do videos on covalent or ionic bonding?

  • Kevin Sheehy 10 years ago

    I have been moving my classes toward more student-centered learning, and your videos enable me to “teach” them at home and remediate/enrich in smaller groups in the classroom. Thanks, and great job!

  • Husnain Bhara 10 years ago

    Very helpful and detailed video! Can you make one on hybridization?

  • Carli G 10 years ago

    This video is amazing! Thank you so much for being so incredibly helpful and passionate when teaching. I am so upset that I have just found these videos as I could really use the help in Gr.12 chem. Words cannot express how awesome you and your videos are!

  • assiremat 10 years ago

    i’ve been trying to understand vsepr for days, but i understood it after 20-something minutes of ur video..ur better than my professor!ehehe, thank you very much!

  • Rahim Rahemtulla 10 years ago

    THANK YOU THANK YOU THnk you!!!!!

  • Norma O 10 years ago

    I love your videos! you make it easy to understand!;)

  • Anagha Sreenivasan 10 years ago

    Thank you for making this. It was very clear and it’s great how you lay out the path of what students should be doing next.

  • Tyler DeWitt 10 years ago

    PLEASE NOTE: at 7:45, I say the bond angle is 180º, but I should have said 120º. Sorry!

  • Nader Al-Haj 10 years ago


  • Dhiraj Sharma 10 years ago

    xlnt way to understand VSEPR in different molecules..

  • KittyKatty2020 10 years ago

    ur videos r super cool! n i like the 2 cam!

  • primusfreak96 10 years ago

    germanamerican81 is right, he is simply giving some feedback, as I’m sure any decent teacher/tutor would like to get.

    why are they for you? these should be for people who want to learn, and if your current system is inhibiting the learning process. then you should respond with equal initiative by listening and taking action.

    we’re all grateful for the videos but dont act sour when someone is trying to help make them more efficient

  • Harky 10 years ago

    Good job!
    The naysayers remind me why I went back to Uni to study Chemistry so I didn’t have to work in customer service any more. Look how entitled some people feel to pick holes in your video instead of taking the time to see the great job you did, for FREE.
    Great job.

  • Madan Ahluwalia, Lawyer 10 years ago

    Thank you!! Very helpful.

  • Troy Waldrop 10 years ago

    This video was very helpful especially because it helped me correct a mistake on a 3D VSEPR model project that i am working on, thank you

  • Daniel Billiot 10 years ago

    I’ve used Brightstorm, Thatchemguy, Mr.Causey, & Cantrell; who all have videos on youtube for people needing help in Chemistry. As far as the VSEPR model goes tdewitt451 has the most indepth turtorial videos. Thank you for this great upload and keep up the good work. Youtube has saved my Chemistry grade by giving people like you a format to help others.

  • Benjamin Rubin 10 years ago

    This video is DA BOMB! God, I wish my teacher was as good as you. Everything is so fricken clear!

  • Ash Ketchup 10 years ago

    Thanks man

  • Tyler DeWitt 10 years ago

    no, i’m right. because SO2 has three things around the central atom: two atoms (oyxgens) and then one electron pair. so that’s three things wanting to be as far apart as possible. so the angles will be close to 120º, and it’s a little less than 120, because of that electron pair, so you end up with 116º. i’d recommend you watch the video called “VSEPR common mistakes” to learn more about how to think through these problems.

  • Giced 10 years ago

    Thank you so much!

  • The Owl-like one 10 years ago

    Dude you’re a life saver….

  • thepianoman1438 10 years ago

    thank you that was an excellent explanation 😀

  • Ā’ishah 10 years ago

    keep making these awesome chem videos

  • Ā’ishah 10 years ago

    i believe SO2 @ 8:40 is drawn wrong some1 plz clarify

  • Tyler DeWitt 10 years ago

    There are actually a few different but correct ways to draw SO2. You might have seen one of the other ways. Is that what is confusing?

  • Tyler DeWitt 10 years ago

    thanks for the comment! but remember that beryllium dichloride is an important exception–it’s a covalent molecule, even though beryllium is a metal. and if you think about it, it has to be covalent, because ionic compounds don’t form molecules, and we can only do VSEPR with covalent molecules. does that make sense?

  • karatekid552 10 years ago

    My chemistry teacher is having us do reviews of youtube videos to get a better understanding of our topics. So far I’ve found your videos to be the top of the line and all of my reviews have been on them. Thanks for making them!

  • Myra Barquilla 10 years ago

    Atoms that have the lowest electronegativity are usually the central atom. Hydrogen is an exception, hydrogen is never a central atom.

    Ex. CO2

    Carbon has an electronegativity of 2.6 and Oxygen has 3.4, therefore Carbon will be the central atom.

    Hope this helps! 🙂

  • stormy1091 10 years ago

    This helped me so much! Thank you!

  • EH 10 years ago

    Why aren’t you a college professor

  • klo9797 10 years ago

    saving my life right now <3 tyty this is amazing.

  • Secunda 10 years ago

    One thing I like about these video, they’re more organize, better, and not being written on a computer : )

  • Abhi Shek 10 years ago

    Nice man.Thank u very much.I wish you were my chemistry teacher

  • Marisol Beck 10 years ago

    the way my chemistry teacher told us is that the central atom is always the first one listed. the only exception to this is hydrogen because it doesn’t have enough electrons to form anything other than one single bond.

  • Devansh Dwivedy 10 years ago

    Thanks! By the way, I just wanted to know why at 4:25, CO2 has to vbe double bonded to both oxygens. Is it possible for it to be triple bonded to one and single bonded to the other?

  • Blonde Duluth 10 years ago


  • Jon Rodgers 10 years ago

    Good job mate, you really explained this well. Very helpful thanks

  • Erica Nicole 10 years ago

    sorry, you’re too hot for me to possibly learn anything.

  • Tony Salazar 10 years ago

    I must admit it was a very clear and solid video. It’s hard to find something with the same Khan Academy quality out there. Thumbs up!

  • John Mandrake 10 years ago

    Thankyou this has been very beneficial

  • Laura Jarrett 9 years ago

    Thanks so much. My teacher breezed over this and now I feel I’m ready for the test.

  • pizza881 9 years ago

    Hi! Your video really helped me because my chemistry is really boring and watching this video helped. I have a quick question. Do the lone pairs also repel from each other?

  • Tyler DeWitt 9 years ago

    Yes, lone pairs repel each other, just the same way that bonds repel each other.

  • Lisa Szchur 9 years ago

    THANK YOU for your videos! You really helped me out!!!!

  • jspang91 9 years ago

    I must say, you’re no bill nye (but who could ever top that god on earth?) seriously though, your videos are very informative and helpful

  • Pooriya Balavi 9 years ago

    Life saviour

  • Esohe Idogun 9 years ago

    hello, why is boron 6…. and beryllium 4?

  • Tyler DeWitt 9 years ago

    Boron and Beryllium are both exceptions to the octet rule. Boron is happy with only 6 valence electrons, and Beryllium is happy with only 4 valence electrons. The reason is complicated, but the basic concept is that they are very tony atoms so they are happy with a smaller amount of valence electrons.

  • Robert Livingston 9 years ago

    Nice balls, bro.

  • ByReal 9 years ago

    2 weeks of my life in 20 minutes. Thanks dude 🙂

  • AlligaThor 9 years ago

    awesome broda!!!
    it was of great help…

  • cooldude 4172 9 years ago

    How can anyone dislike your video? I mean seriously!

  • tinylilron 9 years ago

    Thank you so much for making these videos accessible to everyone! I know understand vesper theory! 🙂

  • Nour Abrahim 9 years ago

    God bless. You’re a life saver. Thank you for this!

  • Smile 9 years ago

    You make a subject that is so intimidating so much easier! Thank you so much for all your helpful videos! I tell all my classmates to check out your videos on here because it helps me so much! I wish you could be our professor! You are gifted at teaching! Thanks again!

  • L.Whitney 9 years ago

    Amazing! So well done, answered all my questions and more! Thanks so much

  • ahwahnee 9 years ago

    You’re the best teacher ever! You miracle worker you;)

  • M.Y. Niqqa 9 years ago

    i should just ditch class, learn everything on here, and go pass my tests.

  • Maxi Fitness 9 years ago

    Thanx u saved my life

  • Gauri_Puranik 9 years ago

    ofcourse it is..hotness like that is distracting!

  • thewilliamjrful 9 years ago

    I was gonna fail chem, but seriously you saved my first chem evaluation exam! Thank you!

  • ThePostmasters4 9 years ago

    You say that when two things are connected to a center atom it is always linear, what about H2O that isn’t linear

  • rashi94 9 years ago

    Question I thought beryllium only has 2 valence electron and Boron has 3.. I checked in my reference table and thts what it shows.. can u tell me why u said boron has 6 and beryllium has 4 valence electrons.. not to prove u wrong, just a bit confused actually

  • Mariya Dineva 9 years ago

    wow, amazing! this deff helped me a lot!

  • memeo12345 9 years ago

    He didn’t say they bad 6 and 4 valence electrons. He said that they are exception to the octet rule, meaning that they are satisfied with 6/4 valence electrons and don’t need 8 electrons.

  • SEEANDPEA 9 years ago

    lone-pair push lone-pair > lone-pair push bond-pair > bond-pair push bond-pair.

    A good example of lone-pair pushing another lone-pair is the water molecule.

    The 3D presentation does help a lot instead of just drawing over the board with x,y,z coordinates.

  • Sophie Louise 9 years ago

    so helpful! thank you thank you!

  • yazeed saad 9 years ago

    I have a question if u can answer it I will be happy
    how can I know it has a double bond or triple bond like HCN how can it be linear i am thinking of bent how can the N has triple bond and CO3 it has a pyramidal shape
    thank you for the vid

  • TBAGNFACEFUKER 9 years ago

    Definitely a simple and great explanation. Chemistry should really just be taught online lol This is where my education is coming from!

  • kolorad 9 years ago

    Thank you thank you

  • tomcat chi 9 years ago

    Best chemistry tutorial on Internet. If I win a Nobel prize in chemistry in the future, I will definitely mention about your tutorial in my acceptance speech.

  • MTS Orton 9 years ago

    aah! i just dont get where u bring those papers from and like how biggg ur table is to fit all of ’em

  • MTS Orton 9 years ago

    u suk…… ur qtn aint clear boy and u aint an american bull shit!!!!

  • lizsusan 9 years ago

    I Love u! U just saved my life!!!! Going for a test tomorrow and couldn’t quite understand it all! Now I got it clearer! Thx a lot!!!

  • Dominique Brodoteau 9 years ago

    Your efforts to explain the concepts are truly laudable.
    Keep it up. Hope you put some videos on Organic Chemistry basics.

  • xuan ling 9 years ago

    Really thanks a lot, ur video save me from common test:)

  • Maxi Fitness 9 years ago

    And his done it again! U’ve made my chem life exciting. I’m a first yer doin pharmacy

  • akashsingh1995 9 years ago

    Thanks a lot !

  • Yanelis Navarro 9 years ago

    Thanks so much, I have a huge chem final tomorrow and your video really helped!

  • iknowwherenandosis 9 years ago

    Thank you so much! You have taught me in 20 minutes what my chem teacher has been trying to teach us for 3 weeks! Keep up the good teaching! Thanks again! 🙂

  • kenny S 9 years ago

    reply? or repel? LOL!

  • Vishal Rohila 9 years ago

    can u make a video to explain dative bond?how to identify the compound that will it make a dative bond or not?how to make a dative bond?
    thnx in advance

  • Misssticalbook 9 years ago

    You’ve made ma love- not like, LOVE- chemistry for the first time in my life! And that’s saying something since i barely passed my highschool chemistry classes. How you teach is exciting and fun and it makes me want to learn more! Thank you a million times!

  • ashley simson 9 years ago

    i love the way he explain chemistry, he is good and cute too

  • Aspen 9 years ago

    You are wonderful at explaining things, this is by far the best video that I have seen on VSEPR. I will be using your other videos !

  • Alphasmsn 9 years ago

    Are you sure the SO2 has one single bond and one double bond, it should be two double bonds!

  • MyKrabi 9 years ago

    Thank you!

  • Regina Ruedas 9 years ago

    Why isn’t ammonium planar with 90 degrees between the outer atoms? Is it solely because it’s 3D and 109.5 degrees spreads them apart further and as equally as 90 degrees would?

  • kheyreddine HADRI 9 years ago


  • Arushi Bhargava 9 years ago

    No, they would certainly not be linear because apart from the 2 bonded pairs there are two lone pairs. lp-lp repulsion is more than bp-bp repulsion, hence the molecule will be slightly bent.. 104.5 degrees…if i am not wrong

  • pamela buck 9 years ago

    such a way of making it stick!

  • TaQuon Ethridge 9 years ago

    Great tutorial!

  • Meredith Uzel 9 years ago

    This was awesome! I love the visuals! I was struggling and this made it a lot easier!

  • Ashwin Arora 9 years ago

    the visuals were really helpfull
    thank you

  • Saurabh Ambardekar 9 years ago

    I liked the video very much

  • Tyler DeWitt 9 years ago

    There are a number of equally correct ways to draw SO2. You can draw it with two double bonds, or with a double and a single bond. In reality, the molecule is sort of a cross between those two different versions, but the point is you can draw it either way.

  • Shakeem Rhemel 9 years ago

    Outstanding video and very easy to understand.. You should be the chem teacher at my school! lol.. Good job 🙂

  • Abdulgadir Ahmed 9 years ago

    this was great thanks a lot!

  • Harshita Girase 9 years ago

    Its AMAZING how you are actually able to make us love CHEM!!
    this video has been a great help and VSEPR theory has actually captured my interest!
    no teacher that I have encountered till date was able to explain stuff as good as YOU!! #respect

  • Diced Pineapple 9 years ago

    we’ve been doing this all week at school and i haven’t been able to understand. In one afternoon i’ve learnt more than i have all week ! Thank you so much, you make it really easy.

  • J Lo 9 years ago

    Helped me understand such a seemingly complicated concept! More helpful than my teacher… thank you so much 🙂

  • Ashish Reny 9 years ago

    THAnks …………….!!!!!!!!

  • Zondrah 9 years ago

    Trigonal is linked to the Sanskrit words “tri” meaning “three” and “gona” meaning “angle.” 🙂

  • Jimmi Peralta 9 years ago

    Thank you so much for spending so much of your time and effort into making these videos. You have made this semester for me a breeze. I feel more confident when I leave class because I know I can always come her for reassurance. Thank you so much again 🙂

  • Hasopum 9 years ago

    Respect to you man! , you are even better than my teacher

  • Iryna S. 9 years ago

    Hello, not sure if this has already been answered or not – but why does the non-bonding electron pair push the atoms further apart? Why would electrons exert more force than an atom? I find that confusing, and I would love to know the answer.

    Thanks!! 🙂

  • johan laggui 9 years ago

    Thanks so much !! really helped me for my test :))

  • What's outside? 9 years ago

    1:40- opposite charges? Repel? Don’t similar charges repel? Meaning neg and neg repel. Anyone else agree?

  • What's outside? 9 years ago

    Great work! Plus more vids to follow up on. Now, maybe explain how energizing molecules, say like water, produces “water lighter than water” from a larger bond angle between hydrogen and oxygen. Hinting on the memory effect h2o can retain after repeated changes between liquid and gaseous states. Please always remind the listeners about the benefits of science for the human race. We are guardians of this knowledge, lets use it wisely.

  • Limbo 9 years ago

    I think that you are talking about the Resonance that occurs in the Sulfur Dioxide molecule, @Tyler DeWitt. And by the way, the video is great…!!! And I really really appreciate the hard work that you have done, especially on those 3D models of molecules.

  • Wyien Youmin 9 years ago

    You are the best, seriously. Amazing. Thank you!!!!!

  • Pedro Penetra 9 years ago

    I loved this explanation! Even me beeing brazilian I understood everything that you explained.
    Thanks a lot!

  • Mary Twarog 9 years ago

    Because there are two ways to draw it, how do you decide which VSEPR model to use? Or is it the same as resonance structures, and you would say both but its a cross between the two?

  • kenicke579 9 years ago

    Lol you’re so adorable. Definitely make chemistry worth learning

  • Vee Nguyen 9 years ago

    Finally get chemistry :3

  • MR M 9 years ago

    i understand Chemistry Ib now

  • my nguyen 9 years ago

    You are awesome!!!! I understood now!!! Thanks a million!!!

  • Oneika Francis 9 years ago

    Is the double bond in this in continuous movement like that in SO3 and NO3?

  • Kawabolole 9 years ago

    Thanks very much !
    Maybe you could add links to the related videos at the end, so that the viewer just has to click on them.
    Anyway very nice video, comprehensive and all (I’m french and i understand it better than my teachers’ explanations haha) so thanks again !!

  • Patrick Okwarah 9 years ago

    well taught.keep it up

  • SMASHY 9 years ago

    bf3!!!! lol joking, this generation is not doomed. Anyways, good video, thanks!

  • Ben Wauhop 9 years ago

    Thank you so much! wish you were my chemist professor

  • R Jones 9 years ago

    You just explained in 20 minutes what my Gen. Chem. professor couldn’t explain in 3 lectures.

  • angel simpson 9 years ago

    U r amazing n really cute
    Thanks so much

  • Toussaints' Wrath 9 years ago

    Hmm, maybe that’s why you’re here in the first place.

    C’mon teach, carry-on.

  • Berenice Villegas 9 years ago

    Good evening Mr Dewitt,
    In this video you say that electrongs have negative charges and opposite charges repel each other but aren’t 2 negative charges or 2 electrons the same charge? This is confusing me. I love your videos by they way. I went from a D to high B and still have my final Im shooting for an A! 🙂

  • Berenice Villegas 9 years ago

    ooops I just saw your correction. 🙂

  • Kari Kelly 9 years ago

    I haven’t seen anyone correct this and I scanned the comments quite far. You’re saying Beryillium “Di”chloride. Beryllium is a metal and prefixes aren’t generally used in ionic bonding nomenclature…Are you sure that is the right nomenclature? Prefixes are used to distinguish between elements that combine in multiple proportions, right? Is there such thing as Beryillium trichloride? Why are you using a prefix here?

  • Dann-I Music 9 years ago

    like charges repel*

  • Joshua Nolos 9 years ago

    why isn’t berrylium(BeCl2) has a complete octet rule? is this an ionic bonding?

  • Tyler DeWitt 9 years ago

    Beryllium dichloride is an important exception. It’s made of a metal and a nonmetal, but it’s actually a covalent molecular compound, not an ionic compound. So yes, what I’m saying is the right nomenclature, because it’s covalent, not ionic.

  • Joshua Christie 9 years ago

    Hi Tyler, just a quick question. My chemistry teacher has taugh us that structure with 4 bonds two of which being lone pairs is named Angular. Is it different due to being british or has he taught us the wrong structure?

  • kasuni8 9 years ago

    THANK YOU SOOOO MUCH FOR THIS! I have a midterm next week and my professor just goes by too fast! I was so lost and you just saved my life!! THANK YOU SOOO MUCHHHHHHHHHHHHH!!!!!!!!

  • Leah Olson 9 years ago

    Seriously saving my life. My teacher was so confusing with VESPR theory. D:

  • Julia P 9 years ago

    So glad I found your videos!! They’re so helpful!! Thanks

  • forgettispaghetti 9 years ago

    THANK YOU SO MUCH. I AM BEYOND GRATEFUL TO HAVE FOUND YOUR VIDEOS!! Pls continue saving lives like this 😀 <3.

  • Reyna Vanni 9 years ago

    Thank you Mr Dewitt for your time to explain this concept. I will be having my midterm test next week and you’ve really simplified the VSEPR in an unimaginable way! Cheers from Canada!!

    • TheWickedMango 9 years ago

      Yorku??? PIETRO?!

  • Rohan Chander 9 years ago

    Dope concept Liam.

  • Lauren-Ann Graham 9 years ago

    If I had not found your videos I would probably fail chemistry! You are an incredible teacher! THANK YOU!!!

  • cocopopp - 9 years ago

    This video is extremely helpful!

  • Teresa Mubaiwa 9 years ago

    thanks 🙂

  • Alaa Mortaga 9 years ago

    I love you !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

  • Swimming_Ninja 9 years ago

    You are awesome! 😀 You have no idea how much this has helped me! 🙂

  • john smith 9 years ago

    u said ionic bonds stolen electrons not sharing, and now you say they are sharing…a bit confusing. Ionic vs. Molecular

  • David Gomez 9 years ago

    Shout out to Mrs. Brasington

  • Tiên Hồ 9 years ago

    thank you so much, you save me from my test 🙂

  • Jake Smith 9 years ago

    Tank yyou for spending your time and making this video! 

  • TheXtamac 9 years ago

    Finally, I understand this. My high school Chemistry 1 & 2 class failed to go over VSEPR. As a result, as I was tutoring someone in Chemistry 1 we came across it (he had a different teacher) and I wasn’t able to teach it properly. Since I plan to major in biochemistry, I figured I should take the time for figure it out. Thanks for the video!

    • BurningBlitz1 5 years ago

      TheXtamac how did that biochem degree go

    • Wit 3 years ago

      lets wait 2 more years

  • Jennah S 9 years ago

    OMG thank you. Saved me for my exam tomorrow.

  • Charlélie .MALETRAS 9 years ago

    This teacher is unbelievable. His explanations are simple and more interesting. 

  • Emma Vlahou 9 years ago

    Thank you so much! Great video and great techer, too! You made vsepr so simple to understand!! Keep teaching! 🙂

  • Nataliya Yashayeva 9 years ago

    This is perfect! found it for my high-school son and now my five-year old is also watching the videos with a lot of interest.  These are his comments:”This teacher is the best and I love this teacher!!!”  

  • Tanatious15 9 years ago

    You make awesome videos.

  • BKcam 9 years ago

    THIS GUY IS Ba! PUN INTENDED! Thanks man I spaced out the last class or two 😮

  • jaketl97 9 years ago

    Literally so helpful for AP chem thank you so much

  • Sagar Gupta 9 years ago

    Thank-you So much It made my concept more clear. Once again Thank-you so much. 

  • Ammar Badawi 9 years ago


  • Samuel Souto 9 years ago

    Love your voice no homo. Makes for a relaxing learning experience. Great job!

  • Matilda Nadwi 9 years ago

    ive fallen in love with you…marry me! lol thank you so much im an ace student but my chem teacher sucks and i wad afraid of failing this term. youre a life savior

  • eyesally 9 years ago

    dude thank you so much!!! you have helped me a great deal (: 

  • katiebeut 9 years ago

    That was very helpful!! great job explaining things in a simple way and showing 3-D examples. Thank you for posting this.

  • AZAM M 9 years ago

    your effort made life easy for so many people over the world—-REALLY  LIKED IT

  • Lilan Gamage 9 years ago

    Thanks Dude! =D

  • Lilan Gamage 9 years ago

    Really did help so much!

  • Noy Kariti 9 years ago

    thank u

  • rmvb619 9 years ago

    wish I would have watched this before I got to O chem

  • Nina Zzz 9 years ago

    perfect! thank you so much!

  • elena Esp 9 years ago

    Lol you also know about chemistry,now I like you even more!!

  • Jack Gearing 9 years ago

    its likely you won’t get the mark for saying molecule is a ‘bent’ shape. You should use the term ‘non-linear’, as opposed to a molecule with 180 degrees called ‘linear’. Hope this helps people:)

    • Tyler DeWitt 9 years ago

      I respectfully disagree. It’s fine if you want to call the molecule “nonlinear,” but “bent” is also a widely accepted term, even in the most technical of circumstances. Look on Wikipedia, and you’ll see that the shape is called “bent,” and I can’t find a Chemistry textbook that doesn’t call it “bent.” Again, I think that “nonlinear” is a fine name, too, but I don’t think that “bent” is a bad term to use.

    • drakonspirit 8 years ago

      On aqa papers it allows the mark for “bent”

  • Jack Gearing 9 years ago

    Great video though, im 100% for exam tomorrow!

  • Brian Sweeny 9 years ago

    Tyler.. At Uni they dedicated 3 hours solid on VSEPR in my Chemistry module (I’m studying Physics) – couldn’t understand it..watched your video’s and walked out of an exam on VSEPR with 90%! You are amazing 🙂 Bri

  • Amanda Hernandez 9 years ago

    Thanks so much! 

  • Vinith J 9 years ago

    Thanks a lot!!! Great job. 🙂

  • Ricardo Martinez 9 years ago

    5 star video. Thank you for your help

  • Andrew Owsley 9 years ago

    only here because I have to be… Nice video though

  • inna b 9 years ago

    thank you for this video

  • lunaticmoon19 9 years ago

    You’re my hero… Thank you so much!

  • Magnus von Wangenheim 9 years ago

    thanks!! great help! you are a great teacher much more capable of teaching than all my chemistry teachers together =)

  • Akanksha Sharma 9 years ago

    thank you soo much for this video!! i especially love the way you guided where to go from this video…usually its so much more confusing to find other videos related to the same topic. thanks again:)

  • Hannah Tacardon 9 years ago

    excellent video!!! THANKYOU SOOO MUCH

  • Phace 151 9 years ago

    very well explained and thorough. One mistake, while explaining the trigonal planar you said 180 degrees and meant 120. still the best video thus far.

  • Asantewa Opoku 8 years ago

    Wow u have a gift for teaching for sure

  • Abdullah Khan 8 years ago

    Very useful video I like your style of teaching Its amazing and crystal clear

  • Abdullah Khan 8 years ago

    Can you also post videos on Grade 12 physics problem solving projectile motion and Newton’s laws etc ?? On YouTube?

  • Naz khan 8 years ago

    You helped me soo much Thank you. Can u plz do videos on organic chemistry

  • Kevin P 8 years ago


  • kylirnuwa135 8 years ago

    As usual good job and thax keep making these videos they really help!

  • Justin Yang 8 years ago

    chemistry eleven honors

  • michelle robinson 8 years ago

    I love your videos. they really help!  was having a hard time understanding, but you break it down!  Thank you sooooo much!

  • Indeesh 8 years ago

    Amazing video! Best by far, now I understand – I was even sick from school (so no notes). Thanks!

  • kylirnuwa135 8 years ago

    LOL bent molecule 2D shape underneath looks like a smiley face

  • Denton Adams 8 years ago

    Can you make a video explaining how to determine a molecules polarity?

  • KsstheStrs 8 years ago

    Thank you so much for this video! You taught me what my professor has been trying to teach our 1.5hr class in under 30 minutes.
    I am definitely going to share your page with my classmates! 😀

  • Tiffany Hayes 8 years ago

    Tyler, you are the best!

  • 1157StrangeKid 8 years ago

    Can you replace my chemistry teacher?

  • PIERRE AMED 8 years ago

    Hey Man! you are a marvelous tutor… Thank you a lot. ……..

  • Jay Mee 8 years ago

    thanks! very easy to understand 

  • MsDrosa 8 years ago

    Thank You. You are great!

  • badpanda84 8 years ago

    Do you have anything on molecular orbital theory or Valance Bond Theory

  • JAYAPREETHI 8 years ago

    you say that  what “kind of bonds ”  isn’t a matter.  but don’t the extra pairs of electrons have a significant impact on other electrons?? thank you sir

  • Nihat 8 years ago

    thank you guy. well-prepared.

  • payasitarosita 8 years ago

    Love how you explain everything 👍

  • mudiamommy 8 years ago

    can you please make a video about understanding spdf orbitals 

  • ali khan 8 years ago

    isnt it beryllium chloride

    • aarond102 8 years ago

      No, it is Beryllium Dichloride.

      In a covalent compound the number of the 2nd element is indicated by the prefixes:

      so for example:
       NO2 is not Nitrogen Oxide, its Nitrogen Dioxide. The Oxygen use the prefix di- because there are TWO oxygen atoms

      so that is why BrCl2 is not Beryllium Chloride, but Beryllium Dichloride

  • Teresa Meniru 8 years ago

    I never thought I could understand this thank you so much

  • Cole McNair 8 years ago

    No homo, but these videos are soothing. haha

  • Jason Cheung 8 years ago

    Thanks a lot – you really simplified the VSEPR theory for me :D. 

  • Chanell Moollan 8 years ago

    Thank you!!

  • Haleigh Sandlin 8 years ago

    Thank you so much!!! I’m doing some last minute studying on old topics for tomorrow’s AP Chemistry exam and this helped me remember this topic much more!!

  • Mohammed Almotham 8 years ago

    thank you so much
    u helped me a lot with it
    I was totally lost with it XD

  • Katy LI 8 years ago

    Thank you, it’s very clear! 🙂

  • JAdHum 8 years ago

    I have a question. At 7:40, you mention that formaldehyde has the same bond angles as BF3, but doesn’t the electron density from the two lone pairs on the oxygen repel the two carbon-hydrogen bonds, forcing them closer together, making the hydrogen-carbon-hydrogen bond angle slightly less than 120 degrees, at around 118 degrees or so?

    Also, your videos are really helpful! I’m using them to help me prepare for the MCAT!

    • Tyler DeWitt 8 years ago

      Maybe there’s a *tiny* bit of repulsion there from the lone pair of electrons on oxygen, but you’re not going to get in trouble for saying that formaldehyde’s bond angle is about 120º. It would be different if the lone pair were on the central carbon.

    • Arun Sridharan 8 years ago

      @Tyler DeWitt I did a theoretical calculation of formaldehyde’s geometry at the B3LYP/6-311+G** basis set just to confirm; the H-C-H bond angle is actually 115.85 degrees, and the H-C-O angle is 122.07 degrees. So you’re right – around 120, just like you’d expect.

  • 27nimnim 8 years ago

    Thank you, thank you, thank you!!!

  • Denise zujur 8 years ago


  • Kingsley Tan 8 years ago

    very helpful!! Thanks

  • 89vantage 8 years ago

    Great explanations given, excellent vid. Thanks very much!

  • tuck295q 8 years ago

    Can anyone figure what is the VSEPR of IF5 with 2- extra charge? 

  • 수또❤ 8 years ago

    i could understand chem. more through this video!!
    thank u!! : )

  • Abbie D 8 years ago

    Why aren’t you my chemistry teacher

  • Jin Hee Kim 8 years ago

    Thank you for sharing the knowledge.

  • Aaron Ivy 8 years ago

    you’re doing a great job, man!

  • Sara Khan 8 years ago

    Your awesome thank you for making sense of online chemistry.

  • Knight_rider 8 years ago

    He is doing a good job but the should explained the reson the angle is less than 120 is becuse  the 2unshared of S are only howering around S so that is  why they push harder as a result the angle is less than 120.

  • Muhammed Ashique 8 years ago

    like mendeleev…using cards..but ur gd….

  • kristen medina 8 years ago

    Thank you so much! I was so very confused. You made it understandable in such a simple way. Thanks for breakin’ it down ;0)

  • Jim Minogue 8 years ago

    Teaching is an art. This video is like a Mona Lisa for VSEPR lectures. Unbelievable crystal clear delivery. You really take into account the fact that we are students and not scientists. You spoke slowly, pointed and explained everything to the tiniest detail. You need to teach a class on teaching, and if you’ve taken one, it shows in your skill. Amazing.

    • Hamdan Ahmed 5 years ago

      Imagine hiw lucky is that class to whom he teaches! They should be respecting hin more than their lives:)

    • bing liang 4 years ago

      dude that’s right

    • Lucy Villa 4 years ago

      Best description ever for every single video Tyler DeWitt does! … I love the way he teaches so much.

    • Hamna Azhar 4 years ago

      👌 he really should teach how to teach!!

    • Arthur Lee 4 years ago

      He did deliver a talk on TED

  • Siva Teja 8 years ago

    simple and it is helpful

  • Zhe Xiang 8 years ago

    You explained this too well ! You gained my like ! Continue doing more chemistry videos 😀 !

  • Jennifer Park 8 years ago

    hi i have a quest. how come trigonal pyramidal isn’t referred to as bent?? every other molecules that had electron pairs are referred as bent but trigonal pyramidal isn’t…. thx

    • Tyler DeWitt 8 years ago

      Molecules that are bent are ones where you have three atoms in a row, but the row isn’t a straight line. Instead, the line is bent. The trigonal pyramidal molecule is a very different shape from the two molecules that are bent.

  • Junior Traw 8 years ago

    THANK YOU TYLER!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

  • Matthew Brown Videos 8 years ago

    I have a question. On the bent molecule what makes the two lone electron pairs settle on one side of the central Atom so as to make the two other atoms less than 180° apart?

    Why don’t the two lone electron pairs settle on opposite sides of the central atom so as to balance out the other two atoms back to 180°?

  • Inky ip 8 years ago

    yr video is awesome it makes me understand more thx so much,beside u have a great passion on teaching thx so much

  • Inky ip 8 years ago

    i want to ask why ch4 bond angle is 109.5,not 90

  • Akshay Parulekar 8 years ago

    My teacher said Chemical bonds are only attraction force which holds two atom together. They (Bonds) have no any physical existence, Then why do you use long sticks in your model of a molecule? Is She (teacher) Wrong?

  • pushpak X 8 years ago

    can you make a video on hybridisation too??

  • Sharat 8 years ago

    Thanks for these. I love the way you explain.

  • hareesh naringrekar 8 years ago

    sir ur teaching method izz exceelent so m gonna stict to ur channel but i cnt find videozz on molecular orbital theory n valence bond theory … basicaally what i want to say izz i need videozz on the whole off chemical bondingzzz…..plz produce as much videoz on that concepts as u can or if u already have sun1 can pleaz provide me wid d link vry eager for itt… thanku

    • memento_mori 5 years ago


  • Tina Sood 8 years ago

    At 10:20 you mentioned that the un-shared pair of electrons pushes harder on the two atoms. But don’t the electrons in those  bonds repel each other? 
    Btw, great video, thanks! 

  • Cibi Sounder 8 years ago

    Wow thanks a ton for all this help you’re doing to people you don’t even know. I wanted to get a brief on my theory for chemical bonding because I end up sleeping in my classroom during chemistry periods and my exam’s coming after two days. Then I came to know about you and your videos 🙂 Thanks a lot for all this effort you’re taking to help us understand 😀 We love you.

  • Naman Handa 8 years ago

    Could you please do a video on Valence Bond Theory and Molecular Bond Theory?

  • Ghanshyam Mehta 8 years ago

    Isn’t the angle 109 degree 28 minute in tetrahedral structure 

  • Prem Prem 8 years ago

    Thank you so much for making chemistry understandable! A few minutes of your videos shave hours of studying cold university’s books.. Be Blessed

  • Louis John 8 years ago

    sir wat about the structure of cyanide

  • Louis John 8 years ago

    sir  what about molecules with no central atom

  • Tiffany LeAnn 8 years ago

    thank you. i feel like you are my teacher this quarter

  • Ned 8 years ago

    I did not understand his Lewis dot structure for SO2…shouldn’t it have double bonds on both sides ?

    • x305seth1 8 years ago

      i was as confused  as you once because sulfur would share 5 electrons when it had 6 valence electrons… just keep in mind one of the oxygens (the one with the double bond), in either resonance structure, gets one electron added to it…  also notice that sulfur has to follow the octet rule… thus 4e (single bond) +2e (lone pair) +2e (single bond)=8e

  • v ! 8 years ago

    no but can you be my chemistry teacher please

  • maka veli 8 years ago

    This is the best!!!

  • maka veli 8 years ago

    When do you know if it’s bent or linear?

  • Roshan Kathir 8 years ago

    I like the content of your videos, but you talk really slowly….. You should try to explain a bit faster. 

  • Shirley Destin 8 years ago

    I love you

  • ThumperLikesToast 8 years ago

    Very well done. Thanks!

  • V Hadis 8 years ago

    thanks ^_^

  • talha javed 8 years ago

    Give this man a noble prize ………….

  • N N 8 years ago

    Thanks! Really helpful

  • James Cho 8 years ago

    thank you soooooooooo mmmuch….

  • John Pen 8 years ago

    Thank You! It was very helpful!!

  • alloftheseabove 8 years ago

    This was extremely helpful. Thank you so much

  • Reid M 8 years ago

    This video helped sooo much thank you!

  • Cin Wong 8 years ago

    Thank you for taking the time to make this awesome video.  

  • Zeke 8 years ago

    I really can’t thank you enough, this video really helped me out. Thanks for taking the time to do it. 

  • MintyTofu 8 years ago

    Thank you so much! I was having some trouble understanding my teacher’s notes; this video cleared up all my confusions before my exam 😀 got 100%!

  • reghu 8 years ago

    sir may i know y only  aquaterial atoms are removed in trigonal bipyramidal structure?
    in ozone molecule y can’t there be a single bond between all the three atoms? 

    • Jose Almaraz 8 years ago

      Because you got off the total number of valence electrons in the compound. Just say like 24 and the central atom X” is surrounded by two terminal atoms such as Y” well first you complete the octet rule and make Y” happy with 8 V.E. so lets say it was a single bond and now you have two in the bond and 6″ are left to go on the terminal so you spend a total of 16 leaving 8″ V.E. You have to satisfy the compound. so say X is not happy after you apply the remain electrons to it for example may say is +1, meaning it wants an additional electron. So, create an additional bond which makes that cloud bond, be a double bond and so. The key is to satisfy the compound. It is more less like you have to balance an equation before working with it. or

  • Tianna Robinson 8 years ago

    This was awesome!!! I never learned this in high school and thought I was screwed in college, thank you so much! I was going to look at Khan Academy, but then I came across your videos and loved it! I will definitely be watching the rest of these in order!

  • Qud Man 8 years ago

    You just saved my grade

  • Alex Bishop 8 years ago

    Thank you for making these videos. I would like you to know that they are helping me through my chemistry class (:

  • UNEARTHED36 8 years ago

    I am in honors chemistry and your videos help me a lot. I use them to study too 🙂

  • Maycy Vandora 8 years ago

    I just really have to say this. I freakin love Tyler’s ability to explain complex chemistry in such a simplistic way. You are a life saver! My professor knows his stuff but he has no clue on how to teach what he knows to ppl in a way that even a 2yr old can understand and THAT is what you do. I am so ecstatic about finding you and your videos!

  • The Tony Hernandez 8 years ago

    do u have any video about molecule electron magnetism ( polar or non polar molecule ) with a compund of three elements,.

  • Marco z 8 years ago

    really doing great work

  • Hiddi Duran 8 years ago

    I love you!

  • Fletcher Varnson 8 years ago

    My boy Tyla just saved my chemistry grade right here

  • Steve Mouncer 8 years ago

    Clear and concise.  Well done 🙂 

  • Unchho Hang 8 years ago

    you owe me in chemical

  • Nardotini 8 years ago

    i have a test tomorrow and u made me understand this *100 better, thanks

    • DoctorSargeMD 8 years ago

      I have a test tomorrow as well and I am cramming hardcore. These videos are so helpful! Good luck on your test.

    • Lopez 4 years ago


    • Michael Vona 4 years ago

      ELNikobelic a little late lol look when they said that

  • Waicer Reyes 8 years ago

    Props my man..great explanation thanks.

  • Amanda Mariscal 8 years ago

    I honestly wish you were my teacher. Also could you do an oxidation number video (unless you already have, I didnt see it on your channel)? But anyway you my friend are a lifesaver.

  • Zahra Al Safwan 8 years ago

    thank you for sharing this video, very helpful !

  • Abstract Focus 8 years ago

    Thanks. For uploading this video. Very helpful 

  • Sydnie Maltz 8 years ago

    This will probably save me on my exam tomorrow! Thank you so much!! This was incredibly helpful

  • Mélissa Plouffe 8 years ago

    Awesome! Thanks a lot! 🙂

  • Alex malcolm z 8 years ago

    great man!

  • David Légaré 8 years ago

    honestly really awesome and love the fact that you recommend which videos to watch and in which structure!

  • Jolene Tiew 8 years ago

    Your videos are extremely helpful for my studies especially VSEPER. Thanks a lot!

    Can I request u to make some videos on hybridization?

    Thanks you!! ≧﹏≦

    • Alawy Cool 7 years ago

      obvious  u wrote vseper but its vsepr 🙂

    • Jolene Tiew 7 years ago

    • Jolene Tiew 7 years ago

      @Alawy Cool haha oops. my lappy loves typo very much

    • Alawy Cool 7 years ago

      @Jolene Tiew oh ok xD

  • Arlene Enriquez-Rizo 8 years ago

    You’re amazing! Thank you so much

  • Zaris Shen 8 years ago

    Thanks for helping a lot!(*^__^*) 

  • Eco Friendly 8 years ago

    The textbooks make it so confusing. Thank you so much!

  • chitta kundana 8 years ago

    great clarity..thanku so so much!!..

  • Lisa Garcia 8 years ago

    Dude you are the man!! Thanks for all of your help.

  • AKhan 8 years ago

    thx tyler

  • Sirajum Munir 8 years ago

    why is lone pair is stronger than the bond pair electrons?

    • Anthony Mansur 8 years ago

      No you are looking it at the wrong way. For the understanding of the original question, think of the electron cloud changing size (not density) but size. By contained, i mean the electron cloud is smaller because the two nucleus are containing that cloud, but in a lp, the cloud is less contained so the cloud itself will increase in size and repulse or expand more freely, pushing the other atoms away (such as in water, that’s why it has a bent with a 104.5 degree). For the scope of this question, don’t think about the cloud itself just changing its density, imagine it changing its size. Now it you want to even go that far with the density at all, you’re talking to the wrong person. As an AP Chemistry student, I’ve learned (and still am) that there are just things you don’t question and just accept. Don’t try to over complicate things. 

    • Sirajum Munir 8 years ago

      wow, great explaination. thank you very much for this nice explaination. and also thanks for the hard effort of making me understand this

    • Sirajum Munir 8 years ago

      well, i like to know things. youe.r explaination was great. you’re not the wrong person, you made me understand the reason of their larger amount of repulsive force. and i dont believe in the theory that believe what its told to you

    • James-Muhwezi 8 years ago

      Lone pairs are nearer to the nucleus of the central atom and of course nearer to each other than the bond pairs. So their repulsions are stronger.Thanx Sirajum.

    • Sirajum Munir 8 years ago

      @James-Muhwezi its my pleasure thanks to you also.

  • Nita Jain 8 years ago

    11:20 Water, also a bent molecule, has a bond angle of 104.5 degrees. Can molecules with the same molecular geometry still have different bond angles?

    • Anthony Mansur 8 years ago

      Yes, but first of all, the reason why water has a degree of 104.5 is because of its lone pairs of electrons that give a stronger repulsion (think of it as a fatter electron domain cloud) compared to a cloud from a bond (since the lone electrons are only attracted to one nucleus instead of two (from a bond)). This is why instead of water being 120, it is less, and the more lone pairs a molecule has, the shorter the angles becomes because of this repulsion.

      Now for molecular geometry, molecules can actually still have different bond angles, and it’s similar to the concept of having a “fatter” cloud. For example, the molecule phosgene (COCl2) seems to have a trigonal-planar geometry with 120degree bond angles, but it actually has 111.4; the reason is because it has a double bond. And generally, speaking, “electron domains for multiple bonds exert a greater repulsive force on adjacent electron domains than do electron domains for single bonds”.

      However, this is not always the cause, because one of the resonance structures of nitrate ion (NO3-) has a double bond and two single bonds, yet it still has an angle of exactly 120. 

  • Ari It 8 years ago

    Wonderful video! Thank you so much! Hopefully I pass my chemistry test tomorrow. My teacher doesn’t teach us anything. She goes over it quick and if u don’t get it she says oh well.. Thank god for YouTube and u!

  • Anushma Maharjan 8 years ago

    helped alottt !!!!

  • M. Bee 8 years ago

    I’m getting an A in Gen Chem 1 because of you!

  • Queen Kahlan 8 years ago

    thank you so much, this really helped me out alot 🙂

  • GENIUS316 8 years ago

    Remember, pairs push more

  • Mel B 8 years ago

    It seems like BeCl2 would be ionic because it is a metal and a non metal but if you look at their electro negativity differences, Be is 1.5 and Cl is 3.0 so a difference of 1.5 makes it polar covalent. I was using the video for my chemistry classes and had to work it out to make sure as I originally didn’t think it was covalent. Thanks for giving me a good resource for my students at home and in class!

    • Tyler DeWitt 8 years ago

      Good question! You’re right. BeCl2 seems like it should be ionic, but it’s actually covalent and it’s an important exception to the usual rules.

    • Nick DePue 8 years ago

      @Tyler DeWitt Excellent video. Thanks for the work. Why are Be and B exceptions to the rules? Why don’t they follow the octet rule? Is it just these two particular examples or is that a general rule for those two elements?

  • Vickee Beach 8 years ago

    your videos are so helpful! I’ve been watching them all semester as help with my tests. they’ve helped a ton! Keep up the good work 🙂

  • Anna 8 years ago

    This was very helpful! Thank you 🙂

  • Tariq Miller-Green 8 years ago

    Thank you so much
    You’re a great teacher.

  • David Tran 8 years ago

    This video was VERY helpful ! Thank you, Tyler !!

  • Rialb Hu 8 years ago

    tyler de witt my nigga

  • lesly mendez 8 years ago

    You are the best professor ever! Thank you for your awesome video :)) !!

  • Pranav Raj 8 years ago

    dude thats such a coll stuff…awsum…

  • Aryavarta Giri 8 years ago

    Thank you very much Tyler!! But can u brief me if the two lone pairs of electrons in case of water repel each other? If they do, shouldn’t they be oppositely placed around the atom for the sake of stability?!! Thank you so much! 

  • Black wo 8 years ago

    Thank you very much teacher you help me alot

  • Vicky Sharma 8 years ago

    sir you are expert in explaining all these. 
    i think it is worth learning from your videos than going to school on a regular basis.
    thank you sir.

    • Faisal Ahmad 5 years ago

      Vicky Sharma send Bob

  • namdev chintapalli 8 years ago

    Tyler,  it is really an awesome video.

  • a o 8 years ago

    This guy is amazing… I never understood chemistry but with his help I think I am getting  it 🙂

  • The Truth 8 years ago

    Would a methyl radical be somewhere in between 109.5 and 107

  • Casey B 8 years ago

    Thanks for making this video!  It’s really helping me understand this concept.  I have a quick question – is NH3 definitely trigonal pyramidal?  In my MCAT study book it says it is tetrahedral pyramidal, and it also says that on a website I found.

  • Martin Sun 8 years ago


    • Anita Rawat 4 years ago


    • And I hate Androids like an iPhone user 4 years ago

      More like 5.0 x 10^9

    • Email Email 2 years ago

      he deserves to be taken off youtube you nerd necc

    • dawood awan 2 years ago

      Boy are you giving him

    • dawood awan 2 years ago

      If it’s a yes then go ahead

  • Milind Bebarta 8 years ago

    Sulphur has 6 valence electrons. The figure you drew of SO2 , there are only 5 valence electrons in sulphur atom in that. I’m a bit confused.

    • Wealthy Cow 8 years ago

      Sigma AND PI’S
      They actually are the reason for reasons not to be explained here

    • Milind Bebarta 8 years ago

      Thank you my grace. 
      You are the true king of the seven kingdoms.

    • Wealthy Cow 8 years ago


    • Milind Bebarta 8 years ago

      Let me keep the 8th one my grace. 🙂

    • Wealthy Cow 8 years ago


  • JAYANTHIRANI E 8 years ago


  • Shivam Gupta 8 years ago

    Thank You For this !! 

  • Mani Khan 8 years ago

    That’s ammmmaaaxiinggg

  • Panolof Clashing 8 years ago

    Not many teachers can say they have 100 000+ learners in each of their lessons or lectures.
    You can consider urself one of the best teachers out there.
    Awesome videos, I fell a bit behind in Science … You helped me catch up.
    Thank you. 😉 🙂

  • Javiera Klenner 8 years ago

    Could you please be my teacher? My Chem teacher sucks and I honestly learned more here than with her resources. Thank you for explaining it so well!

  • Abdullah Noman 8 years ago

    not good but the best vedio ever. but what’s for cacO3

  • Steven Kyle 8 years ago


  • Reece Hawkey 7 years ago

    Awesome video man really clear and very well presented, thanks heaps 🙂

  • Monica Ocampo 7 years ago

    I just want to thank you! I spent an hour trying to figure this out by reading my textbook and you explained it better in less time!

  • Mastering the arts 7 years ago

    Great Work…Awesome video and thank you.

  • Lee Baysdon 7 years ago

    Beautifully done.  I’m using it for my Intro Chem Classes. 

  • Preston Archer 7 years ago

    So why, on the SO2 does the O double bond on one side but not the other, and how are we supposed to know the geometry of it if we don’t know why?  If you look at the formula and don’t just know this by memory SO2 is going to sound linear..

  • Kaushal Sha 7 years ago

    I have seen your videos and your tedx talk. You are so blessed. After watching these VSPER videos- any question related to it cannot trouble me. I would like to see more videos and I know, you would like to tell many stories. Thank you for doing such a great job. I live in a remote area but your videos keep me alive and connected to the world.

  • Dina Atoum 7 years ago

    First of thank you for the video it was very helpful and i want to ask in bent molecules which things is pushing away from each other and why?

  • Alaia Hemphill 7 years ago

    Your videos are the reason I do well in my chemistry class. I never understand my professor so I have to come home and figure everything out through youtube. The way you explain everything is extremely helpful and easy to remember. I’ve learned so much from your videos!!! THANK YOU for sharing your knowledge! It is getting me through my chemistry class! 

  • Hannah S 7 years ago

    thank you!!!

  • Kam 7 years ago

    best vid on the internet for this. good job and thanks a lot!

  • Arie de Jong 7 years ago

    Ohhhh my God. I love you!

  • Daniel De La Torre 7 years ago

    This guy has the ability of making a 20 min chem video fun to watch and not boring ! Thanks 

  • sampath vinay 7 years ago

    hey thanku dude u r awesome….ur concept and ur attitude is amazing…

  • Kriss Ghetau 7 years ago

    Very well explained! 

  • Afra F 7 years ago

    Does it matter if the bond is single or double? How does it affect the shape?

  • Debi Kipp 7 years ago

    omg!!!!   I love your videos.  I understand things so much better.  You make it interesting and easy to understand.  Thank you.  Can you do a video on equations for chemical reactions, I don’t know if you have that in your videos because I am just visiting your website for the first time.  I will definitely tell my classmates.   🙂       I am struggling with understanding how to balance the equations with reactants and products.  

  • Amana Freitas 7 years ago

    A quantity of CO gas occupies a volume of 0.36L at 1.9atm and 299K . The pressure of the gas is lowered and its temperature is raised until its volume is 1.2L . Find the density of the CO under the new conditions. where can I find a video w similar questions I am so lost 🙁

  • Praveen N. Kartha 7 years ago

    you are simply great..Thank you very much for all your efforts..and prayers

  • Eric Rice 7 years ago

    Great video!  One piece of advice from one fellow teacher to another – when introducing a concept, try to avoid using examples that happen to be exceptions to the rule.  You explained how Be and B are exceptions to the octet rule very clearly so it wasn’t much of an issue, but it adds another level of thought to the problem that you don’t want the student focusing on in the intro.

  • Waheed360 7 years ago

    you’re the most talented teacher I have ever come across, it’s clear that you have an extensive knowledge on the subject and can have amazing communication skills. you have a passion for science and education that’s what makes you a great teacher. please continue to make more videos.

  • Jordan 7 years ago

    Thanks so much! I have my AS exams soon and I didn’t understand this, but now I do! My teacher doesn’t explain things properly so I’ve had to teach myself the entire specification.

  • Sheryl Begay 7 years ago

    @Tyler DeWitt , I am so happy I found your channel! You can’t imagine how helpful your channel has been for me! You practically helped me pass my Chem classes. I love how simple you explain things and repetitive you make each lesson to ensure we understand. Thank you so much!!!! I couldn’t have passed Chem without you.

  • Francisco Lopez 7 years ago

    Quick question
    what elements are the exception to the octet rule?

  • da 7 years ago

    tyler i hope you have an older brother named booker.

  • sophieeleiva 7 years ago

    I don’t know if you has mentioned in other videos but I don’t understand what you mean when you say “Adam” and “Cody Alan Bonds”? those are chemical concepts or just names that you chosen? please explain to me, I’d thank you a lot <3 
    PD: my english is so bad 🙁 My native language is spanish

    • Tyler DeWitt 7 years ago

      The two terms I’m using here are “atom” and “covalent bonds.” I have videos on both of these topics, so check those out. Also, check out my videos called “What’s the Difference Between an Atom and a Molecule?” and also “Ionic vs. Covalent.”

    • sophieeleiva 7 years ago

      LOL I’m so dumb haha, I just read the subtitles intead of listening, thanks

  • Lesleann Brackney 7 years ago

    Thank you for this video!

  • Grace Stella 7 years ago

    here because I have an exam tomorrow. thank you for the perfect explanation

  • Maxinne Estaniel 7 years ago

    This is so helpful!!!!

  • Kevin Whaanga 7 years ago

    hey Tyler Dewitt, bro can you make a video on hybridization?? P.S. you’ve been a huge help too my studies!

  • Viviana Kuhn 7 years ago

    Hi Tyler! I’m from Argentina and found your wonderful explanation, thanks a lot! I teach chemistry at high school here in Necochea, Argentina. Tried to find videos about this subject and failed…up till I found your video. Excellent. I’ll translate into Spanish and will subtitle your video, then I will up load here. It’s so good to find a clear explanation about this item, thanks a lot again….saludos desde Necochea, cerca del mar….

  • Viviana Kuhn 7 years ago

    Sorry for my English….I forgot to say that

  • SimplyBella 7 years ago

    Three hours my professor tries to explain to a class and no one understands. 20 minutes and one video later I feel like I can win s Nobel peace prize in science ( being a bit dramatic but I digress lol)

    My friend, Thank you!!!!

    • girlwreckless 7 years ago

      +SimplyBella : exactly, hahaha!!!

    • Ayman Hussaini 6 years ago


    • PotatoMC 5 years ago

      ‘Nobel “Peace” Prize in Science’

    • Benjamin Arya 5 years ago

      *Noble Chsmistry Prize

    • CLO 4 years ago

      you graduate yet?

  • Shannon Howse 7 years ago

    Love your videos! You are helping me out on so many levels… I have to ask, although I havent watched the other two videos that tie into this one yet… How can one determine which atom the electrons will be closest to? Does that key into the VSEPR theory or is that another completely different aspect?

  • Shoroug -Sw 7 years ago

    9:33 why it isn’t two double bond !!
    Please someone tell me?

  • PT Yamin 7 years ago

    Very clear, but very slow

  • Max Burgess 7 years ago

    does anyone else agree with me when i say his arm movements on both views of him are really distracting??

  • Bozhidara Bozhilova 7 years ago

    @Tyler DeWitt Thank you so much for this video!! Perfect explanations, examples and models! It helps really to imagine what happens!
    Good luck! 🙂

  • Nick Simon 7 years ago

    Thanks again for these videos, huge help, especvially for us who cannot afford college, who buy their textbooks online.  I am now watching your videos for every section I have read in this textbook I got on ebay for 5 bucks.

  • kabushaha 7 years ago

    what about the water molecule ; it consists of 2 things and should be 180 degree apart. right?

    • Ali Hasan 7 years ago

      @Tyler DeWitt Hahaha….

    • Frank Otto 6 years ago

      you can do that too, ethane would be like two trigonal pyramidal structures connected head on.

    • Mark Ma 6 years ago

      kabushaha it would be bent

    • Lovish Chhura 6 years ago

      he has explained it .

    • IJustWannaComment NotMyRealChannel 5 years ago

      I like your username

  • Heather Mains 7 years ago

    You are awesome!

  • Ans Ali 7 years ago

    Just 1 question about the shapes. Which atoms create.
    Linear when two things 180°+180 °=360°
    Trigonal when three things 120°+120°+120°=360°
    atoms get tetrahydral in shapes when”4″ things come into play. So my question is why atoms doesn’t arrange themselves in a way that looks like square in shapes.
    Like 90°+90°+90°+90°=360°
    I’d very thankful if you can clear my concept cuz what I see is atom gathering together to form 360° in total so why tetrahydral in shape for 4 things. 109.5° leads us where

    • H SINGH 7 years ago

      @Ans Ali Just get to basics, shared pair of electron wants to allign themselves in such a way, so they can be away from each other as much as possible. ( due to e-e repulsion)

      In square shape , The total angle would be 90 degree , but as said above, to minimize repulsion, it want to get away as much as possible. so instead of 90 degree, it will prefer 109.5 degree thus forming tetrahydral shape.

      and If you think about trigonal shape, it’s not because molecule have studied maths or it wants to look cool, infact . it is the the only possible shape where 3 shared pair of electron will be apart from each other to max. extent.

    • Ans Ali 7 years ago

      @Harman SINGH thanks for the help. Really appreciated.

  • Kevin Joe 7 years ago

    at 2:50 you say that “these electrons want to be as far away as possible”. which electrons were you talking about? was it the 2 electrons in each bond or the 2 bonds itself?

    • ewdgsfhxgjhj 7 years ago

      +Kevin George The electrons in one of the bonds repel those in the other bond. They are holding the Cl attached to them at 180 degrees because if the moved any farther up or any farther down they’d be closer to each other.

  • Eishabiche 7 years ago

    Do you teach Organic Chemistry???

  • Kate Sanzone 7 years ago

    Thank you so much for your helpful videos.  I am so grateful for your tutorials, as I am currently taking a self-paced independent study course through BYU and only have my text as a guide.  Honestly, I would be banging my head against the wall without this!!  I have used Khan Academy in the past, but there seems to be a tendency for the instructors to ramble.  Thanks again!!!

  • hodaabuhijleh hudaabuhijleh 7 years ago

    You’re amazing your videos are so easy to understand you help me understand everything for my final exam! Make more videos for chemistry !

  • Ellie 7 years ago

    Awesome explanation!! I’m kinda in love with your analogies cause’ I understood very well the way u taught in this video.. Thanks a bunch for such a hardwork.. God bless you dear.. 🙂

  • Misssweethearted .Cohen 7 years ago

    I love you! This video was amazing and so helpful. My learning process is enhanced by because you are so eloquent and handsome.

  • GAFLecologygirl 7 years ago

    Many individuals who do chemistry tutorials could learn from you. You consistently give thorough explanations in each of your videos. It helps so much!

  • Tushar Choudhary 7 years ago

    Nice illustrations.

  • Ana 7 years ago

    You are so great! I can’t thank you enough for making your videos, all of my friends who are taking chem watch your videos also. You seriously help us more than you think, my professors take 2 hours to explain something you can explain in 20mins or less AND make it fun and interesting to learn. THANK YOU!

  • Ana 7 years ago

    Forever thankful for your videos, and your dedication to share all your knowledge with us!

  • kaykay4jay 7 years ago

    this is awesome just keep it up

  • Ritwik Das 7 years ago

    The visual explanation using 3D structures of molecules helped a lot in understanding the concept very clearly.

  • Le Nguyen 7 years ago

    Would someone explain for me to understand why VSEPR is important? Why we need to learn this? Forgive me if my question is stupid, but I am curious to know. Lol.

    • Bhargav Sisir 7 years ago

      ahh..well..vsepr helps u lrn about the.. lone pair-bond pair repulsions which inturn helps u in undrstanding the way these atoms are arrainged in a molicule with respect to the repulsion series mentioned in vsepr…on one word..it helps u in figuring out the structure of molicules….thts it

  • Daniel feferman 7 years ago

    All the bent shape molecule are 105~ degrees? Doesnt the electronegativity have an effect on it and if so why does it important to remember the degrees?

  • Sterlee Zapanta 7 years ago

    i love you!! great videos also very handsome tutor…..

  • Arthur Goldblatt 7 years ago

    thank you, your videos are great. please continue making videos on all chemistry subjects, especially ap chem @Tyler DeWitt

  • Arthur Goldblatt 7 years ago

    are the electrons always in pairs @Tyler DeWitt

  • ThatAwkwardAsianGuy 7 years ago

    Mr. DeWitt is so damn good in teaching! Like holy crap, I finally GET IT.

  • Gffdfff tapaswi 7 years ago

    thanq so much Tyler

  • Enric Palagud 7 years ago

    BeCl2? Is it really called beryllium dichloride? thats a combination of a metal and nonmetal, i think you don’t put prefix on it.

    • mahnoor shahid 6 years ago

      So Be is an exception and doesn’t follow the octet rule.

    • Abdul Moeiz 6 years ago

      +mahnoor shahid ur right and remember AlCl3 too is covalent !!!

    • mahnoor shahid 6 years ago

      Abdul Moeiz Yeah well Al is definitely a metal

    • Lovish Chhura 6 years ago

      U r right but remember AlCl3 is both ionic and covalent as per Fajan’s rule.
      Al3+ has (+)ve charge which will attract electron cloud towards it.
      this will disturb shape of Cl3-. The electrons will come in axial line b/w
      Al3+ Cl- which is character of covalent bond.So, it have both ionic and covalent character..

    • James 3 years ago

      this is an ionic compound, shouldn’t be used as an example for a bond angle

  • Insha Aleena 7 years ago

    Please do a vid on resonance; chemical bonding. If you already have one made, please reply with the link, I’d be grateful. Thanks!

  • Tologna T 7 years ago

    This is pure fire.

  • Tanveen Kaur 7 years ago

    got it nicely

  • Sri Giri 7 years ago

    +Tyler DeWitt Hey…….thanks for the video………enjoyed ur explanation and the concept

  • jwalant bhatt 7 years ago

    How do i memorise which atom has how many lone pairs? i watched every video and understood everything (Great Teaching methodology btw!), but that part always trips me. Is there some sort of trick? Thanks in advance 🙂

    • ewdgsfhxgjhj 7 years ago

      +jwalant bhatt You need to draw the Lewis structure of the molecule, that’s the easiest way to figure it out. Or consider this: the central atom, with the exception of Be and Al, should have an octet (8 electrons) around it. So subtract 2 for each bond it has, and the other electrons should be in lone pairs.

  • seju kim 7 years ago

    Oh gosh you’re sooo kind! I was actually planning on where to go next while it’s loading *^.^* and after that ending I realized I’ll be screwed XD Thank you so much! YOU DESERVE LOTSA LOVE!!

  • Mrigank Pandey 7 years ago

    You’re doing great stuff,man!
    Thank you! +Tyler DeWitt

  • puteri elaika 7 years ago

    why not u do the video about hybridization

  • Sakshi Mittal 7 years ago

    Amazingg videos

  • Pranava Pakala 7 years ago

    You are the best teacher. My chemistry teacher in should be fired

  • Jowariya Shah 7 years ago

    that was jst amaizing….well explained….it jst saved my time..👍👍👍👍👍

  • Antonis Peppas 7 years ago

    why it is pronounced as VESPER when it is VSEPR?

  • Mulugeta Tebkew 7 years ago

    thanks Tyler it is really helpful your explanation. it’s clear and accurate I like it. I was confused before now I have clue .

  • colorpaper princess 7 years ago

    love this video!

  • The Tinker 7 years ago

    good video homie

  • Tom Shibu 7 years ago

    you’re truly one-of-a-kind

  • Aaron Park 7 years ago

    i love you
    thank you sooo much

  • David Madison The Guardian 7 years ago

    So would H2O be a linear shape? I always thought it was more like a triangle.

    • ZC Z 7 years ago

      +David Madison no it has lone pairs

    • Gabriel Jawiche 7 years ago

      +David Madison No. H20 may seem like a linear shape but after drawing the lewis dot structure you realize that their are 2 lone pairs on the O atom therefore H2O will not be a linear since it does not have 2 ,but 4 bonds attached to the central atom ( which is Oxygen). H2O is bent

    • David Madison The Guardian 7 years ago

      @ZC Z Thanks. I really appreciate the response.:-)

    • David Madison The Guardian 7 years ago

      @Gabriel Jawiche thanks for your reply the description really helped me understand where I went wrong

  • David Madison The Guardian 7 years ago

    Ok, guess at about 8:40 you addressed my H2O concern.

  • S Chemistry 7 years ago

    i love you so so so much… really… finally i understood

  • Victoria Richardson 7 years ago

    I have online chemistry and ALL of his videos help tremendously! Thanks Tyler!

  • Adeel Abbas 7 years ago

    In a covalent bond,there are 2 electrons from each atom.I want to know how these electrons live together in a bond having same negative charge?????

  • Kalai Sri 7 years ago

    thank u so much ….because now only im very clear in VSEPR

  • Hollis Family 7 years ago

    Thank YOU!!! NOW I get it.

  • lalalai hebe 7 years ago

    totally save my life. thank you so so much from the bottom of my heart.

  • Pooven Mootoosamy 7 years ago

    Thanks Tyler 😊

  • Sub Alpine 7 years ago

    My Chemistry instructor asked us to come up with a Lewis Structure for BH3 with LiH, anyone have any thoughts?

  • Anthony szeto 7 years ago

    Thank you!

  • kool1joe 7 years ago

    Your videos are phenomenal man. Thank you so much

  • Devin Gunawardena 7 years ago

    Your videos are really helpful, can you make a video on how to draw lewis structures?

  • Cassie powell 7 years ago

    Tyler, Do you have ANY organic chemistry videos?

  • Ptathamesh Khandare 7 years ago

    my question is i read in some book that the lone pair electron have long distance from shared pair why is that

    • Ashes burner 7 years ago

      bcz they take more space

  • Jessica Crum 7 years ago

    What are the element exceptions to the octet rule?

    • mary12497 7 years ago

      +Jessica N
      H, Li, Bi

    • mary12497 7 years ago

      I meant Be not Bi

    • Jessica Crum 7 years ago

      +mary12497 Thank you!!!

  • umid umid 7 years ago


  • Marco 7 years ago

    great video

  • Tobi Samuel 7 years ago

    please make a video on molecular orbital theory

  • Bemnet Dejene 7 years ago

    bless your soul sir. i can finally understand this

  • John C 7 years ago

    1.5x speed anyone? Superb video tho

  • Melissa Moon 7 years ago

    They should replace my textbook with your videos

    • Esej Snake 4 years ago

      @Jake Fields Good teacher! My textbook explains some things clearly and other…eh, I sometimes wonder if the author himself even understood the topic.

    • zubair muhammad 4 years ago

      Very good licture

    • Hey Hey 4 years ago

      Totally agree with you

    • Hanna Naegeli 3 years ago

      @Esej Snake Same! I couldn’t agree more lol

    • q q 3 years ago

      I learn more from the internet than from my teachers

  • Claire Wu 7 years ago

    I love your videos! Thank you!

  • مغ 7 years ago

    Can u show the polarity plz?

  • Sara Faheem 7 years ago

    Just DeWitt

    • Elif Bayram 5 years ago

      Sara Faheem LMAO

    • Caroline Galvez 5 years ago


    • Jordin Levy 5 years ago

      This should definitely be a shirt

    • rp 4 years ago

      +Jordin Levy so true

    • Vahul Sivakumar 2 years ago

      @rp hey…r’nt u the guy who struck up a really long(tho beautiful) conversation with cristopher?
      Ur conversation really made my day☺️😊😉

      (Others…just don’t mind me)

  • Tapa 7 years ago

    After watching this video. I wanna sue my teacher!

  • Anil Sinha 7 years ago

    It is so sad that we have a big chapter on Chemical Bonding being done with in 6-8 classes. Is the goal just to get people in good colleges or to actually teach something which is very interesting ?

  • SoloXFuRy 7 years ago

    Great vid~!

  • Sourb Mahi 7 years ago

    Please make a video on the bonding continuum and polarity! 😄

  • Nida Tariq 7 years ago

    superb effort

  • Christiana Aina 7 years ago

    Thank you, Mr. Dewitt

  • sara Hesham 7 years ago

    wow great work you reallly helped me alot thank you

  • Lazi Ilir Danga 7 years ago

    Usn’t BeCl2 an ionic compound? If so, why are you representing the Lewis structure of BeCl2 with covalent bonds?

    • H1N1 4 years ago

      lazi danga it’s a polar covalent bond, something in between

  • Aires Ngunza 7 years ago

    You are awesome Dr. DeWitt!!!

  • Julia Okrant 7 years ago

    I love you

  • Rachael Daley 7 years ago

    Please do a video on hybridization.

    • Incentive mohit 5 years ago

      Rachael Daley hey hybridization is just a simple topic

    • Chitti Satish 4 years ago

      Can u give ur no.

    • Mukesh Singh 4 years ago

      Yes… I also need it

    • Mouleesh 3 years ago

      @Hamdan Ahmed Yeah man, it’s been an year

    • sailesh s 3 years ago

      Oh yes I need that please

  • Salah Boughali 7 years ago

    thank you so much this is really helpful but i’ve got a question
    do we have to know how to draw lewis structure in order to find the vsper ? cause i have a huge problem to find out the lewis structure
    thank you 🙂

  • Lindsey Mansour 7 years ago

    YOUR AWESOME!!!! Seriously I took my fist Chem class ever and totally rocked every exam thanks to u.

  • Baek to my Yeol 7 years ago

    god bless your soul

    • daniel letterman 3 years ago

      Can tell the homeschooled kids of cult parents.

    • 아잇히 Oishi loves BTSpop 3 years ago

      Hi exo l

  • Amanda Falke 7 years ago

    Great job Tyler!

  • Gisela Leyva 7 years ago

    I love your videos. They’ve helped me a loottt!!
    Can you do a video on Polarity and Hybridization? please!

  • lylyana Zarela 7 years ago

    Taylor can you please make more videos about AP Chemistry please
    Like Hybridization 🙁 i dont get it at all

  • Dean FrigginWinchester 7 years ago

    thank you very very very much kind sir,i bow down to you in gratitude.May god bless you and all those you care about thank you for the lectures,and please do keep making such videos

  • Zaid ameen khan 7 years ago

    Amaaaaaaazing.u r a superb teacher

  • BJean93 7 years ago

    Not all heroes wear capes.

    • Kyle Carlos 3 years ago

      Some uses a whiteboard and a marker

    • J S 3 years ago

      Some wear lab coats

    • Stef_ii 3 years ago

      Some just talking

    • Email Email 2 years ago

      wtf nerd necck he said opposite charges do not repel

    • mariela sanchez 2 years ago

      @OKCCanna Reviews .

  • HamadKadventures 7 years ago

    I LOVE YOU MAN! ahaha seriously, thank you so much!!

  • AJAY P.S 7 years ago


  • MadisonRegan 7 years ago

    Wouldn’t the angles in the CH2O molecule technically be <120 and >120 because of the double bond between Carbon and Oxygen?

    • Laila S 7 years ago

      Yeah. Maybe he made a mistake? 🙂

  • Ilyani Sophia 7 years ago

    Hello there, good video. But i want to ask how can we recognize whether the atom is “happy” or not if they dont reach the octet state. Meaning to say how are they excluded from the octet rule.

  • Vignesh R 7 years ago

    isn’t the structure of so2 this o=s=o ?

    • Legend Nacata 5 years ago

      Vignesh R probably a year late but no. Oxygens need to have 8 electrons & how you wrote it they only have 4

  • J Rohit Sai Nagarjuna Reddy 7 years ago

    make a vedio on valence bond theroy

  • Kierra Smith 7 years ago

    Good teacher 😀

  • Abhishek Sharma 7 years ago

    In BF³ there is tetrahedral shape, how ???? what about the electron pairs of ‘B’ ?? Because any atom performed Octet (expect H)

  • S. N 7 years ago

    +Tyler DeWitt, could you make a video on hybridization and orbitals ?

  • HAyse baysal 7 years ago

    I always thought I hated Chemistry until I realized it was all because of teacher! Now I can understand what we are learning about in class. Thanks Tyler! 

    P.S. Maybe I just missed it but do you have any videos on just Lewis Dot Structures?

  • Joseph Cabinta 7 years ago


  • Rowa 7 years ago

    Thanks a ton ! 👏

  • Bomb 7 years ago

    Did you say opposite charges repel?

    • Odysseus S 7 years ago

      +Bomb Just a mistake I guess.

  • Tony Pellegrini 7 years ago

    The videos on VSEPR are excellent. Where did you get the models that you use ?

  • Peter Leonardis 7 years ago

    I hate mr Skarecki

    • Peter Leonardis 7 years ago


  • Janie Story 7 years ago

    thank you so much! you should be my chemistry teacher! 🙂

    • akshat sharma 6 years ago

      you gotta be my pen pal !!

    • Janie Story 6 years ago

      umm what?

    • RO3 5 years ago

      Fuckin creep XD

  • Paul Hobbs 7 years ago

    Thank you! This is a huge help!

  • -5 kg 7 years ago

    These vids really help.👍👍👍

  • Sarah Orow 7 years ago

    You’re actually a life saver

  • Amer Tout 7 years ago

    think you very much

  • Urias Triumph 7 years ago

    May God bless you and reward your effort for helping us all out in this our moment of confusion.

    • daniel letterman 3 years ago

      Seriously ? Are you home schooled ? I think the teacher does this because the world will be better with fewer confused people. Why isn’t god blessing babies with cleft palettes, or children being sold into servitude. Is god just there to help you with exams ?

    • Omar Syed 3 years ago

      daniel letterman wtf are you saying stupid ? let him preach

    • Wit 3 years ago

      @daniel letterman god is busy counting your mistakes, also counting your moms too

  • Shyann Dyson 7 years ago

    This was very helpful. Will be subscribing to your page for all my organic needs. Thanks 😊

  • Urias Triumph 7 years ago

    God will definitely bless you for this. In a two hour lecture I couldn’t understand this and in this video along with the others, I have understood it completely. Thanks a lot.

    • savethe Coconuts 4 years ago

      @Another View maybe to you

    • Another View 4 years ago

      @savethe Coconuts There’s no logical explanation for any of the countless Gods people have conjured up over the years.

    • DARK CHOCOLATE 3 years ago

      u learn this in uni?

    • Hiba Abdulrazzak 3 years ago

      @Another View attack of the athiests

  • מוישי וולפסון 7 years ago

    thanks men

  • Life after 40 7 years ago

    Thank you, very well explained.

  • O EducBr 7 years ago

    Ms. Hale crew representing

  • ελπιδα τοκα 7 years ago

    Perfect video! Thank you!!

  • Robyn Forbes 7 years ago

    At 1:41 he said that opposite charges repel. Like charges repel, opposite charges attract.

  • Menerva Lobe 7 years ago

    Excellent video! Thank you so much.

  • Rose Black 7 years ago

    Can you do a tutorial on how you made your 3D molecule model?

  • Saqlain Shaikh 6 years ago

    Thank you Sir..ji…

    • PickPrism 6 years ago

      +saqlain sk. it is my farz… 😛

  • Faisal Fahad 6 years ago

    thank you .. no no thank you so so so so much. you helped us so much. i dont know why our inestructors not as easy as you

  • Siddarth Siddu 6 years ago


  • RixCanDoit 6 years ago

    1:39 Oops! “opposite charges repel”. s/b like charges repel.

  • Yonathan Tadesse 6 years ago

    the main reason i’m passing hon chem

  • Kevin Santana 6 years ago

    the degrees is only really to help you with bent shapes right?

  • jV 6 years ago

    why dont you have any videos on how to draw lewis structures?

    • Chris Mun 5 years ago

      Britny Rivera may ik Which file it is under? Thanks

    • Vanessa Mumu 5 years ago

      +Britny Rivera can you tell me where is it? i really need those. my teacher just told me and my friends to practice a lot but dont give us any useful tips and tricks to draw it. im stressed out. its really confusing for me.

    • ML_Coc Gaming 5 years ago

      that’s a very good one try it and let me know

    • nestof3 5 years ago

      Vanessa Mumu I couldn’t find them either. I prefer his method of teaching. I can’t believe he would just skip it. Maybe they’ve been deleted?

    • Enoch Kandiah 4 years ago

      Why should he make a video like that? There is plenty of videos which explains how to draw Lewis dot structures.. He made this video to teach VSEPR a different way than others. He’s a good teacher =)

  • Arun Thomas 6 years ago


  • Arun Thomas 6 years ago


  • Jacky Zai 6 years ago

    Thank you very much!!!!!!

  • jay rashamiya 6 years ago


  • MaNu Ads 6 years ago

    Umm.. Please Can You do a videos of hybridization cz im screwed in it 🙁

  • JoyousCookingCo. 6 years ago

    So this is the exact same thing as electron geometry? What about molecular geometry?

    This video helped a lot. My professor made this way too confusing.

    • D 6 years ago

      +Collegegirl45 Molecular geometry is the arrangement of the atoms, ie; bent, trigonal, tetrahedral…elcectron is the arrangement of the electrons on the central atom…
      check this thing out, it’s a 3d representation of a few molecules, I found it to be super helpful.

  • ahmad ali 6 years ago

    we need you ,come back and make new videos please 🙂

  • xEpTICSHOTZz 6 years ago

    Very, very, well said

  • Meredith Aubrey Hamm 6 years ago

    I couldn’t understand this in 2 full hours of a lecture but I understood it within minutes of watching this video.

  • Aidan E 6 years ago

    This is the most helpful video ever. Thank you so much.

  • Corey Delaurentis 6 years ago

    Thumbs up if Mr.gaichus is the greatest chemistry teacher ever

  • Nay Makhlouf 6 years ago

    Can you pleaaaaase make a video about properties of a hydrocarbon??

  • Jason Duong 6 years ago

    How do u tell if a molecule is trigonal planar or trigonal pyramidal

  • Molly Dale 6 years ago

    This video is amazing it helped me so much. I thought I was going to fail my chem test tomorrow but this has seriously helped me understand VSEPR so much better. THANK YOU!!

  • Le Nguyen 6 years ago

    You are my favorite Chemistry teacher.

  • Eunice LePeanut 6 years ago

    This guy is Damn good omg. I wonder how many lives he saved hahahas

    • Highway Drive 717 3 years ago


    • George Lisimba 3 years ago

      He has helped me a lot he is really good at explaining and how I wish I could have a teacher like him in my country…thanks Tyler

    • Leslie Lolong 2 years ago

      count me in!

    • Email Email 2 years ago

      he does not save any lives you moron! he said opposite charges do not repel! ok Boomer! have a noicce Day!

    • Vahul Sivakumar 2 years ago

      @Email Email hey u ***************************** ************!!********?!?***🤬😡😠
      Opposite charges obviously don’t repel
      What’s wrong in that??❓❔❓

  • Lisa Styles 6 years ago

    thank you

  • Cross Roads Productions 6 years ago

    You are amazing.

  • Bandi Prabhas 6 years ago

    thank’s fr ths video

  • Raj Harsh 6 years ago

    Correction -Like charges repel each other.

  • Potatis 6 years ago

    Explained very well. Thank you:)

  • Upasana Goyal 6 years ago

    You are awsum. Can you please post the videos regarding VBT and MOT

  • Harrison 6 years ago

    Best Chemistry Teacher!

  • The Magical Jennet 6 years ago

    Can you please replace my Chem teacher 😂

  • Sahiba Faisal 6 years ago

    you are bae

  • Gordon Slone 6 years ago

    Your videos are fantastic! Wish I had you as a professor, thank you so much!

  • Francisco Clemente 6 years ago

    For SO2 wouldn’t you want the best Lewis structure?, anyway great video, helped me a lot.

  • Something Big 6 years ago

    Replace my chem teacher Sugimora!!!!

  • Van Le 6 years ago

    I am so glad that I found this video!! You are such an extra-ordinary, smart and eloquent teacher (instructor). You just make everything becomes so easy. I feel like i do not have to spend hours in chemistry classes to get the topic.

  • DaveGaming Productions 6 years ago

    You are really helping me get a grasp on chemistry, thanks!!!

  • Sam Park 6 years ago

    So the shapes that you discussed were only molecular shapes?

  • Happy Turtle 6 years ago

    I just discovered your channel on this video 😀 and i am truly thankful; you need to be a professor at a university! Thank you for all your effort <3

  • tushar shivan 6 years ago

    Why unpaired electrons push more harder than bond atom to have bent shape?

  • Sarvineh Garosian 6 years ago

    please do video on hybridization. thanks

  • Vincent 6 years ago

    Thank you man.

  • Zurdat Iftikhar 6 years ago

    very good videooo

  • GW 6 years ago

    You have saved my life. I am eternally grateful.

  • Esther Faith 6 years ago

    ahhhh!!!!! I wanted to know what this theory was for so long!!!!! thank you so much…!!!!! I understood everything..!! Looking forward to learning more chemistry from you…:)

  • Prince Laban 6 years ago

    this is realy awesome!!!!!!!

  • Molly Koch 6 years ago

    Great video, but why is Be an exception to the Octet rule? Why wouldn’t there be double bonds?

  • Shaik Arub 6 years ago


  • mrssusanadcock 6 years ago

    Thank you, you gave me the “ahha” moment.

  • Poke rater 6 years ago

    plz tell me that does this theory explain all kinds of bond or only covalent bond???

    • Tayyaba Anwar 6 years ago

      we’re talking about covalent bonds here

  • Artur Keshishyan 6 years ago


  • John Mandrake 6 years ago

    ..this is really good. I must applaud you

  • Kyrah 6 years ago

    I’ve never seen any video so amazing and so simple to understand like this video. Thankyou so much Mr. Tyler. – From the United Arab Emirates, Dubai

  • Joyce Guo 6 years ago

    Don’t understand why SO2 share electrons like that……plz can someone explain?

  • KhmerD0g 6 years ago

    damn, your explanation is so good
    easy for me to understand

  • MaSin Peace 6 years ago


  • Alan Burke 6 years ago

    Thanks !!! Very Helpful !!!! Definately one of the best tutorials on YouTube !!

  • Nivesh Duppalapudi 6 years ago

    i have a doubt. in H2O , the central atom is O and there are 2 hydrogen atoms on either side , but it doesnot have angle which equals to 180 deg. . it is a bent molecule , but according to u , a molecule which shares electrons should have an angle equal to 180deg..

    • Electrical Engineer 6 years ago

      Nope H2O Has a Tetrahedron shape. H2O, The valence is: 2H=2, O=6. the are 8 bonds in total H•—-• _ö_ •—-•H with 140 degres H angles

  • Nivesh Duppalapudi 6 years ago

    got the answer , i didnt watch the whole video

  • F T 6 years ago


  • Alejandra Lopez Diaz 6 years ago

    I can definitely tell that you take teaching very seriously because you are very patient at explaining things. I am very grateful, thank you for this video!

  • Jose Olivar 6 years ago

    20:27-28 you said 180, but I think you meant 120

  • Zone 6 years ago

    Nice video! Thanks 🙂

  • M. Alexander Sagel 6 years ago

    You’re the man, thank you! The speed of your speech and the way you explain concepts makes learning far more enjoyable than in the classroom. Cheers!

  • Julia Wang 6 years ago

    I spent an entire year on this crap and he just taught me in 20 minutes. godbless

  • dasaadz 6 years ago

    omg i love u im currently crying as i type this thank you so much you saved my life

  • Ose Ibazebo 6 years ago

    Bless your soul. I’ve been studying this for a year and I’m only starting to get it

  • Donald Trumph 6 years ago

    Can you make video of Covalent bOnd

  • Payton Casarico 6 years ago

    Cramming for my Chem final tommorow. Tyler is making things so much clearer than my teacher has taught for the past 8 months!

  • Luke Username 6 years ago

    Exams coming up and throughout the year I’ve a few of my study notes. Thanks for making this!

  • yg1 6 years ago

    I have Chem final tomorrow. trust me I’m a dumbass and I learned the whole course from this channel.

  • Binod Khatri 6 years ago

    you must go for hybridization now as soon as possible…….

  • fakhrul nawawi96 6 years ago

    Can you make a video to differentiate voltaic, electrolytic, and galvanic cell ? Thank you <3

  • Hey Yo 6 years ago

    thankyou very much sir ! now finally am able to do this…

  • Marko Rakic 6 years ago


  • MatteBlack 6 years ago

    Bless your soul mate, this video showed a more proper explanation that my chem prof

  • neon xD 6 years ago

    This video really made my life easier. ThankYou Sir. You are awesome.

  • Odis Johnson 6 years ago

    Tyler Dewitt saved my life, I now finally understand what my teacher was trying to teach

  • J. Wang 6 years ago

    Thank you so much! My chemistry textbook confused me so much on this topic.

  • Kelly Lopez Contreras 6 years ago

    thank you so much for this <3

  • Gurmannat Singh 6 years ago

    best chemistry based videos on youtube…love from india

  • Aarushi 6 years ago

    Very nice video! Great efforts taken!

  • Mariam 6 years ago

    thank you!! I couldn’t get till i watched this !

  • Javid Barvesh 6 years ago

    great introduction

  • Akshita Kesar 6 years ago

    I loved this video

  • nachiket galande 6 years ago

    what about h2o?

  • BH H 6 years ago

    Thanks for this useful Lectures!!😉

  • Electrical Engineer 6 years ago

    According to the cloud model of atom, The H2O should be a Tetrahedron instead of bent shape

    • MJ T. 6 years ago

      kr3wdog06 correct! Guys, remember electron geometry takes into account the bonded and non bonded pairs Molecular geometry takes into account ONLY the bonded electrons. That’s why water has an electron geometry of tetrahedral because of the 4 electron domains, but because it only has two bonded electron domains, it’s bent.

    • Aryama Chatterjee 6 years ago

      with lattice formation and crystallisation the the geometry changes…that’s true….well chhavi Gupta… can u please contact me in fb….it is 9830738118..I have the same profile pic

    • Chhavi Gupta 6 years ago

      Aryama Chatterjee check out ur ‘hangouts’…I messaged.

    • Pooja Kumari 6 years ago

      Geometry of H2O molecule is terahderal, but shape of molecule Bent because Central atom Oxygen contains 2 lone pairs and two bond pairs.

    • Mc Goof 6 years ago

      Pooja Kumari no, the electron geometry is tetrahedral. the molecular geometry is bent/v shape. I’m not sure why you feel like commenting on something that has already been correctly explained..

  • Electrical Engineer 6 years ago

    SO2 has 3 pairs electron, therefore, it is a planer Triangle. In the case of SO2, these 3 pairs of electron form a resonance bond. Draw the planer triangle shape, place S inside the triangle and then put the O______ O outside. You should have a distorted 120 degrees

  • Monica Yasuzawa 6 years ago

    THank you for the video! It was really helpful!!

  • Kristen Selby 6 years ago

    Thank you – you explained it so well!! You are a great teacher!!

  • Lee-an Lu 6 years ago

    what a champ

  • Luciangel Soares Filipe 6 years ago

    how come I dont see anyone excited saying “hey… my homework brought me here”?

  • Lena de Ronde 6 years ago


  • ann chaupis 6 years ago


  • Keshav Sethi 6 years ago

    did he said “opposite charges repel”?? at 1:38

    • sadrahn 6 years ago

      read the annotation, he meant like charges repel

    • David Orton 6 years ago

      Give him a break, hes out making life saving videos for you guys and all you wanna do is make him sorry for a really teensy minor mistake that you already know the correction.

  • Behzad 6 years ago


  • dalip baitha 6 years ago

    is this just me or his hand really is animated

  • Dragon Knight 6 years ago

    thanks a lot for this vid…

  • Aika Oki 6 years ago

    Thank you so much for this video, it helped me a lot!!

  • Luqman Afiq 6 years ago

    Opposite charges repel?

    • Krishna teja 6 years ago

      He got a annotation saying he said it wrong .-.

  • Shane Kendell 6 years ago

    SO2 should have two double bonds, I believe.

  • Ayuni Saharuddin 6 years ago

    Thankyou so much!! Explained well

  • Ashim Poudel 6 years ago

    would you please mind making video in pie and sigma bond..😁😁😁😁

  • David Orton 6 years ago

    I dont think you made a video explaining Lewis structure.

    • mahnoor shahid 6 years ago

      Watch bozeman science videos, he is also pretty good.

  • Engku Aiman 6 years ago

    Why did he said that Boron has 6 valence electron? Someone?

    • Kid82fy 6 years ago

      He other two are shared?

    • Kid82fy 6 years ago

      Oh he said it’s an exception to the octet rule

    • Engku Aiman 6 years ago

      ohh ok thanks

    • Raum 6 years ago

      Beryllium gets 4 btw

  • Vanessa Mercedes 6 years ago

    how to know what atom is the central one?

    • Nawal Amani Abdul Rahman 6 years ago

      The less electronegative atom will be the central atom (:

    • Vanessa Mercedes 6 years ago

      +Emma Wxtson i just lowkey admit that I like to imagine you’re THE emma watson and i get so excited about it. So don’t ruin it. Thanks emma watson. That made me so horny 😂

    • Sara Love 6 years ago

      +Emma Wxtson thank you!! I was thinking the same question and you answered it, THANKS!

  • hanis harun 6 years ago

    thnkssss guysss, tomorrow is my final. oh plis pray for me

  • Nikhil Nainwani 6 years ago

    Best Explanation! Thankyou Very Much Sir!

  • Nidhi Narendra 6 years ago

    Can you please make a video on hybridization?

  • SHOURYA GHOSH 6 years ago

    it was worth a watch truly

  • Arissa Dasa 6 years ago

    what if it has a James bond?

    • sparkly yy 4 years ago


    • GAMING PRO 3 years ago

      than the atomic no would be 007

    • Makenna Frye 3 years ago

      It’d be taken, not shared.

    • Email Email 2 years ago

      This is a good joke i applaud you!

    • MonkeyDP 2 years ago


  • Veronica Cisneros 6 years ago

    Thank you for being one of the fewest teachers that make me feel like science is such an awesome thing to learn

  • Luisana Munoz 6 years ago


  • retro666666 6 years ago

    by far the best explanation for VSEPR. Thank you sir!

  • Gina Chan 6 years ago

    You are a really good teacher and you saved my life. I had almost zero foundation in chemistry and was feeling hopeless about my chemistry exam in Nov until I watched this video. Thanks so muchhh for making this video!!

  • Prototype 6 years ago

    Best efforts

  • Street Life Pa tattoo mo sa noo 6 years ago

    thanks this video helped me a lot in my reporting tommorow 🙂

  • Mamta Sharma 6 years ago

    from which country do u belong and very very thanks for these videoes

  • Hortensia Jimenez Diaz-ITESM 6 years ago

    Hello… I could not find the answer to the question about why considering BeCl2 as a covalent compound… I’ve always seen metal + non metal compounds as ionic…

  • Sara Bauer 6 years ago

    you are so awesome youre saving my fucking life man

  • SoccerKingTV 6 years ago

    wow thank youu

  • José López 6 years ago

    Omg man, thanks!

    – a M.Sc. Chemical and Energy Engineering student in the need of this!

  • Rocky Smith 6 years ago

    Thank you so very much for this video, it was a godsend after my complete retentive disaster in recitation this morning. I have to say this again, thank you because I don’t think it would be possible for me to thank you enough.

    • Rocky Smith 6 years ago

      Oh, almost forgot *smashes subscribe and le like button*

  • MemeReaper 6 years ago

    two lone pairs(h2O) have 104°5…

  • payal sharma 6 years ago

    Great Video Sir.

  • Minahil Tanveer 6 years ago

    This helped a lot! Thank you so much 😊👍🏻

  • Tristan Dale de Borja 6 years ago

    Kudos to you, sir. I don’t need my Phys. Science teacher anymore

  • Salma 6 years ago

    amazing explanation

  • Soriethegreat 6 years ago

    God bless Tyler Dewitt. He saving my grade.

    • Soriethegreat 6 years ago

      Cant save my spelling apparently rofl

  • Navoda De Silva 6 years ago

    Thank you so much. I really appreciate what you do

  • GURSIMAR SINGH BEDI 6 years ago

    that’s all great and knowledgeable video thanx for giving it

  • rusty shackleford 6 years ago

    Tyler my man, you are a good person

  • hamza 420 6 years ago

    If it was in HD then it would be 100% perfect

  • Michael Aden 6 years ago

    You accidentally said “opposite charges repel” @ 1:40 🙂

  • Lova Pumpkina 6 years ago

    That moment when you search YouTube for a chem topic you’re studying and see that Tyler DeWitt did a video on it 😀

    made my day

  • Jakkepally Neeraja 6 years ago

    it is not the opp charges repell it is same charges that repell

  • Michelle N 6 years ago

    YO THIS VIDEO HELPED ME SO MUCH YOU ARE SO HELPFUL please dont stop making videos. ive learned so much within the first 10 minutes than an hour worth of video lecture notes… that are not even made by my professor.
    thank you so much!!!!!!

  • Julie Cramer 6 years ago

    Could you explain how in SO2 the oxygen has an electron to share with sulfur when you drew 6 dots? Oxygen only has 6 electrons in its valence.

  • N. Law 6 years ago

    Tyler DeWitt for President!!!!!

  • Carolina Valdes 6 years ago

    Amazing!!! Thank you

  • Mandar Kulkarni 6 years ago

    Fantastic sir

  • mats m. 6 years ago

    My chemistry savior <3

  • Mohammed S. Ahmed 6 years ago

    thanks man you are great and so clever , you are explaining the lessons smoothly in a great way go ahead

  • Ramon 6 years ago

    If anyone can help, I am more interested in the atoms, neutrons, and protons that make the elements. What career field should I join? For instance, creating new elements? Is it nuclear chemistry or nuclear physics, or perhaps something else?

    The goal I feel inclined to is rearranging of atoms to take the protons or neutrons from one and create another.

  • Rajneel Narayan 6 years ago

    Anyone else notice he said opposite charges repel ‘

    • Ivan Koh 5 years ago

      Rajneel Narayan Thank god i found your comment, i thought that no one realised this after *5* years!

    • Abir Hassan 5 years ago

      Yeah xD

    • lrtx82 5 years ago

      me too..confused me as heck!

    • SkillUp Gaming 4 years ago

      He meant “Negative charges repel”. Electrons are Negative charges.

    • Meer Raj. 4 years ago

      @SkillUp Gaming yes,u r right…

  • DiaryofA WimpyCollegeGirl 6 years ago

    isnt there an octahedral?

    • Kelly Arango 6 years ago

      He has another video about octahedral bonds.

  • Wilfred Ikej 6 years ago


    • Silver Steel 5 years ago

      Wilfred Ikej can some one please explain to me why the cl and cl electrons try to go away from each other but not the cl and Be electron go away from each other i mean how could they even join together if electrons have same charge at 4:00 please some one explain to me it might be the most stupid question ever but i never focus in class or study at my own so…

  • UpAndUps 6 years ago

    I wish you were my professor…. Make life so much easier

  • Agnieszka Ponichtera 6 years ago

    You are really good in explaining chemistry 😉 I can understand you without any problems although my native language is not English 🙂

  • elizabeth garibay 6 years ago

    Thank you so much

  • Jitika Bhatta 6 years ago

    How do we Recognize the lone pair in a molecule???

    • HighschoolChemistry 6 years ago

      It’s when the valence electrons of the central atom aren’t covalently bonded to the electron in another atom

    • Jitika Bhatta 6 years ago

      HighschoolChemistry # thank you so much. Must appreciated your help😊😊😊

  • Jellz K 6 years ago

    Thank you so much, my exam is Tuesday and this has been so helpful!

  • Skylar Gaming 6 years ago

    Thanks for this awesome video. It made me understand VSEPR more. 🙂

  • Arm Schrazz 6 years ago

    Thank You!..I love you professor!..How can I give you my hug?.

  • Joe 6 years ago

    You are a life saver. Thanks.

  • Laraland99 6 years ago

    Thanks so much this really helped!

  • Zainab Nasrullah 6 years ago

    At 7:39 you said it’s going to be have an angle of hundred and eighty degrees? when it’s a trigonal planer and should. have 120 degrees angle

    • H1N1 4 years ago

      It wasn’t intentional

    • And I hate Androids like an iPhone user 4 years ago

      He said 120 at first

  • Mariam Sameh 6 years ago

    thank You 🙂
    You really helped me sooooo much.

  • Thatone Dude 6 years ago

    i wish you were my chemistry teacher

  • Lolita Go 6 years ago

    You are my go-to chem video help master dude. I love you so much please keep making videos you explain things SO clearly and the models really help

  • Estrella Solimar 6 years ago

    Thank you so much!!! This has been amazingly helpful!! I appreciate you and the work you do and share with us.

  • Bad_ly 6 years ago

    this channel, this video is this teacher all of these are amazing …

    Thanks I appreciate it

    I didn’t even know that I’ve watched a 20 min video

  • Chidvi Doddi 6 years ago

    i understand fooooo

  • muskan 0145 6 years ago

    writing chem tomorrow, thanks to you probably acing it ….THNKU:)

  • Chhavi Gupta 6 years ago

    why is SiO2 not linear shaped?

    • Chhavi Gupta 6 years ago

      @Aryama Chatterjee sir, I had an examination, and there was a question…which of the following has a linear geometry? The options had both CO2 and SiO2. To my utmost surprise, SiO2 was incorrect. I’m still not fully sure about the reasons, so I’m trying. Now ahead of this, I consider myself unqualified and knowledge-defficient to be able to argue further. And surely, this 9th grader is incapable of providing u with the best explanation. So let’s just hope that our teachers will clear our doubts (if u have any regarding this topic, bcuz I surely do have). Thankyou!

    • Aryama Chatterjee 6 years ago

      +Chhavi Gupta you are most welcome please do get in contact with me in fb..it is 9830738118..I am there with the same profile pic

    • Chhavi Gupta 6 years ago

      +Aryama Chatterjee hey, I’m sorry for replying late. honestly, I didn’t know what to reply…it’d be good to get in contact. but the strange thing is I’m not on fb. (I know that’s primitive) :-/

    • Pooja Kumari 6 years ago

      SiO2 has linear molecular shape. The two O’s each double-bond covalently to the Si, leaving no electron pairs attached to the Si (the central atom). With no lone pairs to interfere, the two double bonds push as far as possible away from each other, creating 180 degree bond angles – a line. CO2 has the same molecular structure as this, for the same reason. Pi electron is not included in the ACTIVE SET OF ELECTRONS. O = Si = O

    • Chhavi Gupta 6 years ago

      Linear would be correct if there were only 2O atoms and a single Si atom, however, SiO2 forms a network solid. This causes the double bonds from O with Si to be turned into single bonds. As it is a network solid, the Si atom will be surrounded by 4O atoms with single bonds each. This shape is also known as a tetrahedral and a tetrahedral has bond angles of 109.5 degrees, 110 degrees for simplicity. 
      ….O Si O Si O Si 
      ….O Si O Si O Si
      Source Yahoo Answers

  • Hollis Tharp 6 years ago

    I want to marry this guy.

  • Itz-jay-add-me 6 years ago

    Should SO2 Have two double bonds to get a formal charge of zero?

  • Expired Pickle 6 years ago

    What about bent vs linear? Lost me 5% of my grade on an online assignment, give me my + back

  • Emma r 6 years ago

    Chemisnate is better

  • REHAB A 6 years ago

    please I need you to go through NMR spectroscopy

  • Entropy Fan 6 years ago

    14:20 lmao the angles under the trigonal pyramidal look like a face with a red nose

  • forseige 6 years ago

    I was having such a hard time with VSEPR and Lewis Dots. Your video simplified the topic so well! Please make more videos! 😀 *particularly on organic/inorganic chem ._.*

  • Marionettes 6 years ago

    9:27 the lone pair electrons look so cute…i dont know where that came from, just feels cute….

  • not important 6 years ago

    so, for the electron geometry we dont take the lone pairs intro consideration, but for molecular geometry we do?

  • A Human 6 years ago

    I have a chem H test on Wednesday…I really hope this helps

  • J S 6 years ago

    Seriously, you need to be my lecturer. You are wayyyy better than my lecturer.

    • zbor 6 years ago

      Jennifer Stefannie too

  • Jéssica Lemos 6 years ago

    Hello Mister Tyler DeWitt. Congradulations for your videos! Can you please tell me if you have any video explaning how to do the Lewis Structure? I searched but i could’nt find any…thank you very much, and once again congradulations!

  • Wala Al Awami 6 years ago

    Thank you.

  • Maria KoDi3 6 years ago

    this videos about VSEPR are the best!! you helped me so so much!!
    thank you 🙂

  • Seka Wijekoon 6 years ago

    I dont understand how Be can be covalently bonded with Cl. Isnt it an ionic bond? and when covalently bonded, doesn’t the outer shell of Be still have only 4 electrons? so it’s valency is still not fulfilled??

  • Himanshu Raj 6 years ago


  • clarisa perez 6 years ago

    Thank You!! You are a lifesaver!!!

  • Sumitra pokhrel 6 years ago

    You are really helpful! I understand much better than I learned from my class. The structure/picture was really helpful while explaining it. And also, you explain in very detail, professor usually skipped it and make it very hard to understand..:)

  • Clay Harrell 6 years ago

    So, why does barium dichloride have single bonds while carbon dioxide have double bonds?

    • Ruby H 6 years ago

      Clay Harrell because barium is happy with 4 valence electrons while carbon needs 8 valence electrons, elements follow the octet rule.

  • Charlotte Tan 6 years ago


  • Jaydeep Dave 6 years ago

    Best Chem guy

  • Ahitagni 6 years ago

    Tyler sir is a gift from Jesus to all chemistry students. he teaches soooooo well that it cannot be expressed through words.

  • Ali husnain 6 years ago


  • Yukta Gaba 6 years ago

    thanks a lot

  • Lâm Phương Thảo 6 years ago

    Thank you! It’s really easy to understand! A big thumb up for you man!

  • Nadine Johns 6 years ago

    I have a question, what is the central atom of the O2 and what its shape?

    • znar swar 6 years ago

      Asmaâ Aldosari *facepalm* O2 doesn’t have a shape due to it is only 2 atoms bonding.

    • Nadine Johns 6 years ago

      znar swar So VSEPR is only for molecules that have 3 atoms and so on ? I mean more than 2 atoms ?

    • Palina Dubatouka 6 years ago

      well look, what are the possibilities of arranging two atoms in 3d? there’s always only ONE way – line

    • Nadine Johns 6 years ago

      amzy .yzma But the O atom has 2 pairs of inshared electrons , doesn’t it ? shalln’t we define them as 2 bonds ? plus the bond with the another O , so ?

  • waris bhatia 6 years ago

    you’re a good teacher 🙂

  • Victoria Jaimes 6 years ago

    I love this guy bc I learned a lot but his swallows got me rotfl 😂😂😂

    • Zainab Zubair 5 years ago

      i noticed that too lol.

    • IJustWannaComment NotMyRealChannel 5 years ago

      Lol, what you mean

    • Cameron Krolik 3 years ago


  • Pavan Nagasuri 6 years ago

    Mr. DeWitt, have you done any videos on hybridization, or covered that topic in any videos?

  • ghadeer bader 6 years ago

    does it bother anyone else how much he uses his hands?

    • Ruby H 6 years ago

      ghadeer bader what do you want him to use his feet?!

    • 3bdalm7sn 6 years ago

      ليتك ساكته

    • Mk Chex 6 years ago

      u just got rekt

    • Sunshine Resources Srtv 6 years ago

      His hands does not constitute any problem to the teaching but your senses that pay attention to his hands only is a problem to you. You have a big learning problem.

    • lrtx82 5 years ago

      Geez that’s kinda rude..

  • ghadeer bader 6 years ago

    bent is 104.5 not 116

    • Tyler DeWitt 6 years ago

      +ghadeer bader The video is correct.

  • Silas Decker 6 years ago

    great vid man, so informational! Thanks

  • Tatianna Carrion 6 years ago

    That moment this guy is more of your chemistry teacher than the one you see in school every other day…

    • George Bush 4 years ago

      Tatianna Carrion buss down tatianna

  • Harriet Volley 6 years ago

    I have a test on VSEPR tomorrow and I didn’t understand at all until I watched this video, thank youuu!

  • Sanjay Saparia 6 years ago

    Sir why you are not making videos for organic chemistry i.e. about carbon compounds???? We really need it. Hope you will look for this..

  • Kellie GB 6 years ago

    you’re so adorable and I love your videos. Thank you for getting me through college chemistry <3

  • Joanne Woodbury 6 years ago

    is it only me but does he sound a lot like the actor who plays Dr. Reid on Criminal Minds?

  • Ta7sheesh Gamer 6 years ago

    Amazing Video, I have learned alot, you changed the way i think about chemistry thank you tyler!!!

  • Anhar Ebrahim 6 years ago

    really you ar the best chemistry prof i have ever seen > big great to u from egypt

  • Sura Hassan 6 years ago

    Thank you so much.

  • B Meriem 6 years ago

    I love the edit of the video. well done 🙂

  • Freakkky 6 years ago

    Upload a video on bond and molecular polarity.

  • Tara Taggart 6 years ago


  • Palina Dubatouka 6 years ago

    great video really really!!!

  • Jamie O'Malley 6 years ago

    You are helping me teach chemistry for the first time more than you’ll ever know! Thank you!

  • Marc T 6 years ago

    8:43 doesn’t “S” have 6 valence Electrons instead of 5 I am confused???

    • Vishnu Srivastava 3 years ago

      S can have different valency… You will understand it when you will learn co valency..from that concept you will get to know that after 2 nd period around every element has variable valency… It depends on how much you excite an atom..like cl can have valency 1 or 2 or 3 or 4…7 …depending on how much u excite it..

  • Tika Midun 6 years ago

    Can you please help me to understand why bond angle in water molecule is comparatively higher than bond angle in H2S molecule?

  • Faraaz Ibtisham 6 years ago

    I hate youuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu

  • Ark Tarakai 6 years ago

    the MO theory, please upload that video.

  • Shumaila Iftikhar 6 years ago

    What I don’t understand is why is it 116′ if the lone pair should only decrease bond angle by 2.5′ so wouldn’t it be 117.5′ or does it not really matter as it is just approx 116′?

  • fr ji 6 years ago

    Battlefield 3 ftw

  • AR CHEMISTRY 6 years ago

    the given video will also be helpful for chemistry lover

  • Adela Sandoval 6 years ago

    please be my teacher 😭😵

  • Afaq Ahmad 6 years ago

    need a roults law

  • Afaq Ahmad 6 years ago

    I need roult law full explanation+matimaticall

  • Nathan Gao 6 years ago

    Very well-explained, THANKS YOU.

  • WaffleFalafel 6 years ago

    When he brought out the drawing of the bent shaped molecule I kind of lost it. I say a really happy face with a mustache

  • Isabela D 6 years ago

    thank you

  • Janel Perkins 6 years ago

    thanks so much. this really helped me

  • Big Daddy 6 years ago

    use background music

  • Robert Beatty 6 years ago

    This is fake news

  • PotatoMC 6 years ago

    I swear to God, if you go to hell in the after life I will trade my soul for yours and let you live in heaven. God bless you.

  • Mar Mats 6 years ago

    Dude, you’re awesome! This is so clearly explained.

  • Alysia Eck 5 years ago

    Great Video!!!

  • Purple Noodles 5 years ago

    During my lecture, all I could think about was how I’d watch your videos instead to better understand the content. Thank you so so so much. I will pass chemistry mainly because YOU have helped me understand better. I am a visual learner, and I absolutely love how you incorporate pictures, models, mnemonics, ect. into your videos to make things simpler, and better to be understood. You have made such a difference in the way I study and learn. THANK YOU SO MUCH!

  • Gabriella Diaz 5 years ago

    There is something wrong with the example for bent

  • Abby Moss 5 years ago

    Thank you!!!! This helped so much. Really great teaching.

  • Mufasa The Great 5 years ago

    Bless you literally for saving my life 2 weeks in school yet I didn’t understand and just by watching one of ur videos explained everything ❤️

  • ZephoN 5 years ago

    You meant like charges repel, though you said opposite.

  • Young Genius Chemistry 5 years ago

    nyc videos bro

  • Ferdine Reese Mand 5 years ago

    So simple and I could understand

  • Vishwanath Hiremath 5 years ago

    life saviour

  • Paul Carkhuff 5 years ago

    most excellent and simple videos:)

  • Nabi Smith 5 years ago

    I found brain cells in a hopeless place.
    I found knowledge in a hoppeeless placceee

  • Ermias Asmare 5 years ago

    God where have u been all my life thanks a lot I wish you were my teacher @ school i would not stop looking @ you

  • Vinay Kumar 5 years ago


  • Delion King 5 years ago

    I don’t get why the lone electron pairs are so close to each other in bent shape? I mean isn’t VSEPR theory about repulsion of electrons so why aren’t lone pairs have angles between them too?

  • Green 5 years ago


  • Shanjida Choudhury 5 years ago

    lol ur hands are funny

  • Jalisa Seedorf 5 years ago

    do videos on resonance structures and hybridization!!!!

  • Jalisa Seedorf 5 years ago

    Or do the triple bonds or double bonds

  • Maha H 5 years ago

    You’re amazing!

  • FunScientifix 5 years ago

    tomorrow is my finals. thanks a ton sir.

  • Oscar Hinojosa 5 years ago

    Hi Tyler, I just wanted to say thank you. I am doing fairly well in my Chemistry class mostly because of your approach in explaining the materail. My teacher teaches us the powerpoint slides but that doesn’t help us out much as we try to fully understand what is going on. I truly appreciate all the material you help us understand. Thanks again!

  • Ehrunz 5 years ago

    SLAY ME.

  • Ofelia Torres 5 years ago


  • Jamie Fit 5 years ago

    TYLER YOU ARE AWESOME (****) I love the way how you use models to explain things> I wish my professor teach this way. You are incredible and a great teacher and you should be awarded the best teacher of the year

  • kobe jennings 5 years ago

    do hybridization please

  • MiamiPush2theLimit 5 years ago

    THANK YOU!!! Thank you, thank you, kind sir!!! You are a Godsend!

  • Happy Birthday 5 years ago

    Could not explain any better, thank you !

  • Shyam Kalbande 5 years ago

    im impress u

  • Harshitha Reddy 5 years ago

    super cool! thank you!

  • Angelica Cuevas 5 years ago

    Thank you for sharing, it’s so clear now. It’s hard to someyimes image how shapes are affected, especially the lone pairs. I went to my fridge and got grapes and anything speherical just to follow along. Thank youuuuu!!!!!!!!

  • Mishaal Fatma 5 years ago

    you’re so smart.

  • Mishaal Fatma 5 years ago

    you litterally saved my life.

  • Martin Federico 5 years ago

    This IS the best video on this subject, and I´ve watched dozens

  • Balkis 5 years ago

    one word: WOW! thanks!!!!

  • Ghaleb Daboul 5 years ago

    thx man the vedio is really helpful

  • Uziel David 5 years ago

    In SO2 molecule two electrons can’t be so close to each other because of repelling force between them.

  • svetaholz 5 years ago

    Hi Tyler,
    it’s been years since I’ve been in school and not to mention English is my second language and chemistry third lol. I am back in school and your videos are helping me to get by and understand the chemistry as I never did before even in my own language.You are amazing and I can’t even express my gratitude for the work you do. I always hated chemistry because I couldn’t understand it but in your videos it is much easier and even fun. Wish you all the best and thank you for all you do. No videos out there are better for me than yours.

  • Sarah Ghazi 5 years ago

    I CANT THANK YOU ENOUGH. ALL OF THIS MADE SENSE FOR THE FIRST TIME.. and i actually UNDERSTanddd this now… keep making videos to help us … and thanks once again 🙂

  • Offline 5 years ago

    This was incredibly useful. Thank you!

  • Heidi Rees 5 years ago

    Thank you!

  • kyana566 5 years ago

    i just wanna say god bless your fucking soul

  • Kirk Meyers 5 years ago

    Please do a video on how you became my chemistry professor 🙂

  • Kathryn 5 years ago

    This was explained so well thank you!!!

  • Rishav Raj 5 years ago

    I just don’t know how to thank you…… no words… love u and ur teaching…

  • Vanessa Quevedo 5 years ago

    You are the best !

  • Milagros Granados 5 years ago

    Omg Tyler I love you . You made this so easy to understand . My professor was trying to explain this and he was just horrible. Thank you so much I understand chemistry much better because of you. Can you make a video on how to identify if you have a polar or non polar molecule please I’m having trouble with identifying one with a given element or geometric shape. Thank you

  • Legend Nacata 5 years ago

    He said “Beryllium DIchloride” but Be and Cl is an ionic compound meaning that the “DI” does not apply in this case. Am I the only one who noticed that mistake on his part??

    • Tyler DeWitt 5 years ago

      +Jeffrey Abarca You made a good catch, but it’s not a mistake. You’re right, usually metal and nonmetal makes an ionic compound, but BeCl2 is covalent. You’d think it should be ionic, but it’s covalent.

  • Hollow Moon 5 years ago

    why isn’t the “trigonal pyramidal shape” considered “bent” like the others with an unshared e- pair?

  • Gabrielle Chulick 5 years ago

    You saved me all throughout my first semester of college chemistry and I just want to thank you for being a God

  • M Shehzad 5 years ago

    Very good presentation.

  • jaafer dirawi 5 years ago

    I swear I have been stressing for days on youtube trying to understand this. God brought me an angel named Tyler. Thank you so much!

  • Ashley Terik 5 years ago


  • Hasindu Ranasinghe 5 years ago

    this is a great video.but during the video you told, “opposite charges are repel each other”.i think that’s wrong

  • nickilu93 5 years ago

    I love you tyler. I say it in every video I watch of yours. Your teaching style is truly amazing and I understand everything so well from you! <3 Forever grateful for you helping me and so many others pass chem!!

  • Kate 5 years ago

    You look like a blonde Brandon Urie. 10/10

  • agnese calabrese 5 years ago

    You truly have a gift for teaching. Your videos are so clear thank you! God bless you!

  • agnese calabrese 5 years ago

    God bless everyone xx

  • Sandesh Dias 5 years ago

    why can’t my teacher teach like this, thank you!

  • Jack Schneider 5 years ago

    You are the best! I looked at other chemistry videos and can’t stay focused, but yours are just amazing! Keep up the good work!

  • h5u7p5gt h5u7p5gt1 5 years ago

    You’re not explaining what determines the shape, though.

  • YD 5 years ago

    VSEPR says “valence shell electron pair repulsion” so if there is a double bond so there are 2 pairs of valence shell electrons so they will also want to stay as far from each other as possible, according to VSEPR………


  • Anthony Fuentes 5 years ago


  • megan mancinelli 5 years ago

    Hi Tyler! I just wanted to give you a HUGE thanks- watching your videos this semester is why I not only passed my basic Chem course but got an A. You are an AMAZING teacher. Thank you SO MUCH!

  • Michelle Mendez 5 years ago


  • MAHABIR THAKUR 5 years ago

    vry nice vdo its really vry helping

  • Daniel Schmitt 5 years ago

    should be paying my tuition to Tyler because these videos are how I learned chem. thanks.

  • Aaron Leung 5 years ago

    Hey Tyler I wanna how do we find the center atom of an molecule

  • Id Francisco 5 years ago

    There’s something super special about your teaching. And I’m beyond thankful for you for sharing that. I have trouble concentrating on lectures in class, but your videos have helped me. God bless you, sir!

  • K L 5 years ago

    Not only do I love the way u explain things in a way I can actually understand and follow, I love the way u also tell us where to go from this video so I’m not here wondering which video I should watch first. THANK U♥️♥️♥️😭😭

  • Brendan Sutton 5 years ago

    Shouldn’t Sulfur Dioxide have a double bond on each side? O=S=O? Sulfur should have six valence electrons, he has 5. On the left side his oxygen has seven but should have six.

  • Rajani Shrestha 5 years ago

    best vedio i loved it thanx a lot.. 🙂

  • Hatim Alaswagh 5 years ago

    Thank you very much
    its obvious that you love chemistry

  • Tarryn Nell 5 years ago

    Wait… I’m even more confused now. He said it didn’t matter if there are double bonds or triple bonds- it still counts as one thing around central atom. But then he goes on to count a double bond as two things? I pray someone replies before tomorrow. omg.

    • Tyler DeWitt 5 years ago

      Tarryn Nell I don’t think I ever count a double bond as two things. Where do I do this?

    • Tarryn Nell 5 years ago

      Thank you for responding! I could be misunderstanding, sorry!
      It’s at 8:12. I’m not sure if I’m just completely missing the plot or what…

    • Tarryn Nell 5 years ago

      Tyler DeWitt I watched it over and over and I understand where I misunderstood. The two electrons above the S count as the third. I thought you were saying that the double bond with the O counted as two things. But now I see you just counted it as a second thing.

    • Tarryn Nell 5 years ago

      Tyler DeWitt If that comment made no sense… don’t worry about it. I’ve got it 😂 thanks! You’ve helped me so much. I’m definitely going to subscribe!.

  • sami ajam 5 years ago

    this video is helpful but why is the bent molecule’s angle 116? in my book it says 105

  • Penguins Are my favorite dinosaur 5 years ago

    where can u go to get an explanation of chemistry without saying the particles want this and feel that?

  • kk chandrakar 5 years ago

    please do a lecture on hybridization too i desperately need it

  • Genena Cababan 5 years ago

    thank you so much

  • Nameless 5 years ago


  • Jack Wilson 5 years ago

    How do i donate?

  • Emilio Fernández Lavado 5 years ago


  • hlubin04 5 years ago

    Your videos are a life saver ! Thanks

  • -JKR- 5 years ago

    Why dont the pairs which are a part of the double bond try to go as far away from each other too?

  • Primary Disguise 5 years ago

    Boron Difluoride: BFF

  • Ryuunosuke。 5 years ago

    you’re a genius..

  • Fikri Dang 5 years ago

    Damnnn,!!who unliked this video should be ionised,jk!

  • Irisafros 5 years ago

    This was great for molecule geometry but I’m still confused and polar and non polar molecules

  • Curry Rice 5 years ago


    Opposite charges repel? But don’t all electrons have the same negative charge.

  • Warren Borders 5 years ago

    Thank you for this video!!

  • Lal Mama 5 years ago

    i was worried but your always there to help out thank you

  • Roshan 5 years ago

    Hell yeah boiii… gr8 teaching

  • Raymond Shamsher 5 years ago

    Sir thank you for this great video, it helped me a lot in my exams.

  • Neela Megam 5 years ago

    very nice

  • Elena Reca 5 years ago

    Thank you so much for this video! Its amazing !!!

  • Zen Enberg 5 years ago

    Whoa, you never made my expectations fail! I’ve been looking a video for my tomorrow’s lecture and this made me happy. Thanks!

  • M u s K a n 5 years ago

    You are the best teacher

  • Rizwan Ali Imdad Ali 5 years ago

    please share the video on hybridization.

  • Meryem Lahbara 5 years ago

    If they ask me in school who’s your chem teacher, I will say Tyler DeWitt

  • Pranab Mallik 5 years ago

    Tylor Dewitt please help me about the koulrasch theory

  • Knackkie Srm 5 years ago

    You save my life!
    Thanks a lot

  • Samina Tariq 5 years ago

    7:50 ”180° between each…”
    a slight slip of tongue

  • L3 5 years ago

    YOU ARE AMAZING…JUST CHECKED OUT HIS WEBSITE!!!! OOOMMMGG!!!!!! I FINALLY SEE A LIGHT….Thank you so much! Please, please, please, don’t stop producing videos…..you’re like our saviour! <3. xoxoxoxoxoxoxoxo

  • abdul bhat 5 years ago

    Man ur awesome thanks bro it helped a lot

  • Abinaya Abinaya 5 years ago

    Vsepr theory in tamil

  • Dimitra Kourou 5 years ago

    thank you for making me understand this total mess ♥♥

  • Emily 5 years ago

    THANK YOU SO MUCH. I literally felt my stress level reduce more and more the further I watched this video for

  • parul jain 5 years ago

    U r a saviour!!!

  • hello dear 5 years ago

    i luv your explanation prof..

  • Ajay K 5 years ago

    Thx BRO U Just saved my life

  • Michelle Teh 5 years ago

    watching your videos make me question why i still need a high school chem teacher… :’) thank you!

  • billy pho 5 years ago

    Today I was listening to the TED radio hour from NPR and I recognized your voice on the episode of learning and education, THANK YOU SO MUCH for all of the videos!!

  • SM AT 5 years ago

    omg..you are amazing sir….even better thn my chemistry teacher… well done

  • Saraswathi Boraiah 5 years ago

    But in double bond and triple bond, when there are 4 to 6 electrons held at the same place, won’t these electrons repel each other, the same way how the two electron pairs repel each other???

  • NattyGamer 5 years ago

    Bent structures like SO2 have bond angles of more like 119.5 degrees according to J.D. Lee and N.C.E.R.T. Beautifully taught btw.

  • Rich Graziano 5 years ago

    Great explanation, Tyler,

  • Jashandeep Singh 5 years ago

    Tyler- opposite charges repell.
    Me – u r wrong
    Finallyyyyy smeone proooved #thetylerdewitt wrong😎
    Am a legend✌…

    • Wit 3 years ago

      well we can’t compare his wrongs to yours because its infinite

  • Flame Onix 5 years ago

    👏Give 👏this 👏hero 👏a 👏Nobel 👏Prize!👏

  • Manne Naga Rajesh 5 years ago

    Thank you very much for your helping to make it easier

  • Luv Singh 5 years ago

    Are you god gifted or something like that

  • Sham Nasri 5 years ago

    But BeCl2 is ionic not covalent

  • Sham Nasri 5 years ago

    OMG Im at the end and i cried when you said you have a practice problem video youre so helpful

  • Vani Aerupula 5 years ago

    amazing explanation

  • ahmad siraj 5 years ago

    In SO2 , there’s a coordinate bond and a double bond I guess…

  • harsh dabhade 5 years ago

    1:40 “Like” charges repel. Opposite attract

  • Jeda kaboto 5 years ago


    quick question tho. my problem is how you know which one is facing you and which one isn’t because you have to shade the triangular “wedge” now and its SO ugh! someone please help…

  • Naval Kishor Jha 5 years ago

    u r superb, ur teacher felt very happy after having a student like u. u r doing a grt job

  • Ishan Sharma 5 years ago

    Hi Friends
    Our team is lead by graduates from top premier colleges.
    Please feel free to comment and do share your feedback.
    We promise understanding of the concepts with simplicity
    and clarity.
    Yes you can
    Our Motto-“Pleasure to teach”.
    This is our very first video on Youtube on Lewis Dot Structure
    Hope you like it-
    We will be coming up with more videos on Physics, Chemistry and Maths very very soon.
    We will upload the next video very soon.

  • Amalyn Azman 5 years ago

    YORURE AMAZING!!!!!!!!!!!!!!!!!!!

  • Shikhar Sharma 5 years ago

    @10:34 why does the electron pushes the other bonds a little harder?

  • Inam Qureshi 5 years ago

    sir when are u posting videos on valance bond theory and molecular orbital theory…

  • Vaishnavi Jamadhagni 5 years ago

    Please take hybridisation topic

  • Heather Locker 5 years ago

    I will pay to put you in in an air bnb to tutor me all semester here in LA.

  • Sofía Regalado 5 years ago

    Awesome video, thanks to people like you (those who make these videos) I do well in my courses. You definitely are contributing a lot to society!

  • Che Rohaizan 5 years ago

    Thank yoyuuuuuuuuuuuu!

  • Athulya Ganesh 5 years ago


  • A Noli 5 years ago

    Life saver 🙂

  • Wincekers 5 years ago

    I’m currently taking a degree in Chemistry in college. I always watch your videos whenever I don’t understand my Chem professors’ lecture discussions in class. Thank you so much for helping me learn.

  • Shann palmer 5 years ago

    Thank you sir.you are amazing.you make it understand so well

  • Sundar Jubilant 5 years ago

    your 180 degree rule doesn’t work for H2O. Its central atom has 2 bonds but water is not linear.

  • Justan Ghozzst 5 years ago

    When Tyler says 4 things around a molecule is that synonymous with the steric number?, ie does 4 “things” = steric number of 4?

  • Kajal Memane 5 years ago

    Thank u sir. It’s really good. easy to understand

  • Kajal Memane 5 years ago

    Sir , can u do vedio on hybridisation

  • Aliya Jamil 5 years ago

    Sir we need u come back plzz

  • theharshvoice 5 years ago

    U are graet

  • theharshvoice 5 years ago

    U are great

  • RAJ KUMAR TAYAL 5 years ago

    I m from India
    N really thnkul to u
    U r such a hard-working man
    N cool man too
    Thanks a lot for ur great n best efforts

  • Rod The Great 5 years ago

    This guy has endless ways of explaining videos so easily. I am always here when I don’t understand things!

  • Michelle Negrete 5 years ago

    thank you ily

  • Chi Nguyen 5 years ago

    can u do video on biology, please

  • Chasmitha Dharavath 5 years ago

    It’s awsome………

  • Ariel Hemingway 5 years ago

    Thumbs up if you could literally shed tears of joy because you finally understand.

  • My_Knee_Grows 5 years ago

    This guy should be my Chemistry teacher

  • SJW Destroyer 5 years ago

    I’m going to end up owing half my degree to this guy lmao

  • Tajudeen Adedotun 5 years ago

    Again, the almighty Tyler Dewitt has saved my ass!!

  • BeautyLover98 5 years ago

    you are amazing. My professor is good, but I have a hard time understanding the material in lecture. you make things so much easier.

  • sajda hamad 5 years ago

    thank you for existing

  • Trisha Romero 5 years ago

    This is amazing! I actually understand! You keep working miracles!!!

  • Bhavana Kanagala 5 years ago

    Tyler’s helped me so much through high school and now he’s helping me through university. I love you so much Tyler THANK YOU!

  • Ibrahim Hafeez 5 years ago

    Amazing videos , you just have this zest to explain one of the hardest subjects in such a way that everyone easily understands. Keep it up and Please make some A-Levels Chemistry videos

  • Mega Lecture 5 years ago

    For more video lectures on Vsepr Theory visit :

  • Yong 5 years ago

    It’s an unbelievably clear lecture ! Thank you sooooooo much !

  • Parul Aggarwal 5 years ago

    Plz upload more videos.. especially on quantum numbers, thermodynamics, kinetics

  • Amit Sayal 5 years ago

    how do you know if an element follows the octet rule? are there parameters? is it only a select few elements??

  • Jeffrey Matthews 5 years ago

    Please do a video on hybridization and save us…Waiting on u Tyler

  • Ana-Maria Petre 5 years ago

    Chemistry seems so much more approachable when you explain it. Could you please make a video about hybridization? 🙂 I’m sure many of us would appreciate it.

  • Emmanuel Winston 5 years ago

    Why are the atoms pushed closer because of the lone pair of electrons?
    There must be a reason right? Could you answer? I’m in high school right now.

  • Almas Shaikh 5 years ago

    I first came to you in Grade Ten. Now I come again in Grade 12.😂

  • akshat srivastav 5 years ago

    At 1:45 you said “opposite charges repel each other”

  • kugreymon 5 years ago

    The link for the video does not show

  • Ganesh Bhadra 5 years ago

    nice l can understand more in this video thank you😊😊😊

  • Cindy Homans 5 years ago


  • Aakash Sharma 5 years ago

    U just nailed it…………….

  • Julian Martinez 5 years ago

    1:38 “opposite charges repel” – +

  • Aathmika Krishna 5 years ago

    i just learnt this entire theory plus how to write lewis structures all in one EXTREMELY helpful video, could never wrap my head around it until this thank you so much 😀

  • La vita E bila 5 years ago

    God bless u

  • Abhirami venugopal 5 years ago

    can you make a video on hybridization please?

  • Fabian Hernandez 5 years ago

    Can I ask why on SO2? The left oxygen had 7, the S had 5 and the right had 6? Does it not correlate to its valence electrons?

  • Dina’s Fitness journey 5 years ago

    I love u

  • Leon S 5 years ago

    Thank you so helpful!

  • Sarah 5 years ago

    Totally lovin’ you Mr. DeWitt 😘

  • matthew porter 5 years ago

    i agreee i got so much respect for this guy, i dont even need to go to chemistry now

  • NorthernLife100 5 years ago

    love it love you tyler save me everytime

  • Corinne Hoffmann 5 years ago

    Please do a video on sigma and pi bonds

  • Romana Khan 5 years ago


  • dvp.forever AR 5 years ago

    Thanks a lot .. this video is very useful for me to my last night before exam.

  • Shruti Singh 5 years ago

    Umm…at 1:39 you said ‘opposite charges repel’ instead of ‘like charges repel’…
    Btw…ur video was Awesome…People like u are a lifesaver for students….Keep making such videos!

  • Owen Hawthorne 5 years ago

    Why did the chemist named Adam change his name..?


  • Romana Khan 5 years ago

    please plz make a vdo on hybridization I really need it plz

  • Arpit Tiwari 5 years ago

    Won’t the lone pairs on Oxygen affect the geometry of CH2O

  • Denovo Tutor 5 years ago

    Tyler you inspired me to start my Chemistry/Calculus/Physics Tutoring channel! Please check my stuff out guys

  • Eman Khan 5 years ago

    Me:”No animations
    No colors…I won’t understand nothing…..”
    Also me: ((wins nobel prize for highest grades in science)) 😂😂

  • nissan gtr 5 years ago

    why is double bond considered as one though it has four shared electrons else then one.

  • Ritika Mendes 5 years ago

    I love you 😍😘

  • Spencer Fayles 5 years ago


  • Advitya Mehta 5 years ago

    What about pentagonal bi-pyramidal structures?

  • Lina Chikhaoui 5 years ago

    dude your a life saver thank you 😀

  • Ian Walniuk 5 years ago

    Thank you for providing an extremely concise explanation. Although there are plenty of phenomenal teachers, there are far too many who use excessive jargon and rush through material without explaining it fully. You demonstrate a unique teaching style by explaining and then elaborating upon or re-explaining things that many teachers would explain once and then move on from, assuming that the student has fully understood and retained the material. I’m glad to see that your channel is doing well so that students like me can benefit from your videos! 🙂

  • Sergeant Squirrel- Clash of Clans 5 years ago

    really good video clears up alot

  • Documentary Channel 5 years ago

    You are too good.

  • Autobot Bot 5 years ago

    anyone on 2017?????

  • IJustWannaComment NotMyRealChannel 5 years ago

    At 8:34, why can’t sulfur just make two double bonds with the Oxygen? That way, both elements can have a full shell full of bonded, shared electrons. Anyone get me..?

  • Jawo Capua 5 years ago

    Thank you!🙂 Now I finally understand this!

  • Kashokhan Koko 5 years ago

    Nice explanation thankyou sir

  • Kashokhan Koko 5 years ago

    Allah bless you

  • Madeline Haase 5 years ago

    You’re a blessing !

  • rc pandey 5 years ago

    a handsome nerd
    Tyler Durten
    oh wait Dwitt

  • Immanuel Shoyombo 5 years ago

    I love him. Very helpful for my acc chemistry class.

  • Leen Hashem 5 years ago

    Well thank u so so much I have a chemistry exam and u helped a LOT 💚💚💚

  • sri nivsan 5 years ago


  • J Fisher 5 years ago

    You’ve taught me in 20 minutes what my chem professor couldn’t explain in three lectures. Thank you!

  • Connie Chan 5 years ago

    7:54 do you mean 120 degrees and not 180 degrees?

  • destructive distillation 5 years ago

    Plz do hybridization

  • Chandrasekaran T 5 years ago

    very nice

  • Sukhmani Gill 5 years ago

    Based on a molecules shape, how do I determine whether it is non-polar or polar?

  • sox rox 5 years ago

    I’m eternally grateful for this! Thank you.

  • Tech Mania 5 years ago

    How do you know if an element is an exception to the octet rule?

  • Betty Agajyelleh 5 years ago

    your the reason i survived chem!

  • Sabrina Perez 5 years ago

    Please be my professor, lol.

  • Brandon Martin 5 years ago


  • NAOMI OGINGA 5 years ago

    your videos really help me a lot,,,you make it look easy…thank you so much

  • Methsara Prabodha 5 years ago

    well explained and will you please do a video about hybridization.

  • William Lawrence 5 years ago

    You make me a better teacher.

  • marsa ali al hashmi 5 years ago

    thank you very much

  • lylyana Zarela 5 years ago

    WE miss u please make more videos 🙁

  • Ashish Meena 5 years ago

    Love U bro… Just U made me Love Chemistry ….it was my biggest enemy 😊

  • Jose Cabore 5 years ago

    this dude is a master

  • julie Ann edullantes 5 years ago

    hi your so good in discussing 🙂

  • Kyle Wolfe 5 years ago

    Tyler this video is great but I noticed an issue at the end. The two lone electron pairs are put at 90 degrees apart from each other which maximizes repulsions. From my understanding, it would be better to put them on the same plane. So instead of having one on the north pole (top) and one on the equator (side) it should instead have both of them on the equator (sides.) If anyone has any information that contradicts me please present it, because my knowledge is still tenuous in nature but that was one of the main takeaways from the 4 hours of lecture yesterday.

  • Shizza Hassan 5 years ago

    Every time I watch his videos, I’m so amazed at how well he can explain things! Very talented, smart, and organized, thank you for constantly saving my ass in Chemistry you’re a genius!

  • Beverley Hunchinson 5 years ago

    but doesn’t boron have 5 electrons ? where is the other one when its bonding with the last fluorine ?

  • Maryluz Pichardo 5 years ago

    Can you show a structural formula please and is the ? Lewis formula the same as structural formula

  • Swathi S 5 years ago


  • Neil 5 years ago

    Penn State behrend Chem final tomorrow anyone?

  • Donghyuk Oh 5 years ago

    I dont get it. Berillium chloride has an ionic bonding. so why do they share electrons?

  • Tejas Trivedi 5 years ago

    Make a video on organic chemistry please!!!❤😭😭

    • Email Email 2 years ago

      calm down nerd necc

  • Maya Papaya 5 years ago

    Somebody needs to give this guy a Nobel Prize for Best Teacher

    • Liam Does Everything L.D.E 2 years ago

      Maya Papaya he didn’t create anything

    • The education elixir 2 years ago

      @Liam Does Everything L.D.E doesnt matter whether he created or not he deserves nobel prie

    • Ashley Jr 2 years ago

      There’s no noble prize for teaching you moron.

    • The education elixir 2 years ago

      @Ashley Jr well then they better start giving off best teacher Nobel prize bcoz this guy deserves it

    • dawood awan 2 years ago


  • Random Fella 5 years ago

    Why isn’t H2O linear

  • Anthony R 5 years ago

    you are a good man

  • master ibm 5 years ago

    Thankyou so much i have chemistry exam tomorrow and i didn’t even touch my book ….just watching your videos to revise

  • Jay Maganti 5 years ago

    Some heroes don’t wear capes.

  • Old Youtube Videos 5 years ago

    Superb. Man…

  • ks reddy 5 years ago

    In Becl2 lone pair

  • Liv McGinley 5 years ago

    i would fail my final if it wasn’t for you

  • Xuråj BåBå 5 years ago

    Good bless you…Very heard work

  • Killa Clips 5 years ago

    I got a 66 percent because of you

  • Tahmid hossain jit 5 years ago

    *same charges repel

  • Duy Minh Nguyen 5 years ago

    Wow, you saved my life again. (^_^)

  • azooz al_azooz 5 years ago

    Hi . Im ur fan frome YEMEN
    Wich all the best for u
    And i understand frome u more than my D.r 😂😂😂😂😂💜
    Tnx a loooot

  • Musa Atalai 5 years ago


  • Thomas Mcskimming 5 years ago

    Good vid. However at the start you say opposite charges repel. But it’s the same charges that repel. I know it’s a minor error but I couldn’t help point out😂.

  • Vianne Buinguyen 5 years ago

    bless this guy

  • Zeinab Toufaily 5 years ago

    Thank you so much

  • Maily26 Hana 5 years ago

    You saved me. God bless you

  • Kashmala Khan 5 years ago

    U make it much easier i solute u sir .thnkyou soo muchh😍😍😍

  • M. Austria 5 years ago

    Be Cl2 is not Beryllium dichloride 0:44. It’s just read as Beryllium chloride. 🙁

  • Boss 5 years ago


  • Ayesha Shakeel 5 years ago

    wohooooooooooooooooooooooooooooooooooo applause

  • BRO vs BRO 5 years ago

    I agree he deserves so much I understand this much more better KEEP UP THE GOOD WORK AND WISH U A SUCCESSFUL YOUTUBE CAREER

  • Ashanti Bechet 5 years ago

    Do a  video on polarity of molecules please!!!

  • Ipsita Jena 5 years ago

    Unbelievable!! just a single word excellent!!

    • mr solution universe 2 years ago


  • Aishwarya Bambarkar 5 years ago

    Thank You…it cleared my confusions on 3d structures of the molecules…!!

  • Oren Argaman 5 years ago

    Why you don’t have a video on how to determine Lewis structure?

  • Chanakya Narayanam 5 years ago

    can you explain us about hybridisation please

  • vuruvwzlksz 5 years ago

    16:10 Adam, Adam, and Adam and Adam. sometimes i wonder who adam is… ):

  • Old Youtube Videos 5 years ago

    This guy deserves a Nobel!

  • Samo Sammy 5 years ago

    How do one know which elements are exceptions to octet rule?

  • Divine Mother 5 years ago

    Hey man!!!!!!! Your videos are out of the world. God bless you 100 million times. Thanks a lot.

  • shreesh singh 5 years ago

    dude your hands are wierdly long

  • Madhukar Microsoft Bhai 5 years ago

    waw Sir aaj today my all confusion have solved lots of thanks for this vedio

  • Madhukar Microsoft Bhai 5 years ago

    waw Sir today my all confusion have solved by you so lots of thanks for this vedio

  • miha ažbe 5 years ago

    Maan thanks a billion! I have a stupid teacher and i learn all from your videos.. Thanks!!

  • AMMAR HASAN 5 years ago

    This guy makes me completely understand like. Thank god people like this exist.

  • Adriano Maioralli 5 years ago

    Hy, Tyler! I’m from Brazil and I want to do this with my students. How did you make the connections at angles of 108 degrees? They are so perfect!

  • FlavoredRick 5 years ago

    my chem teacher is so bad tysm

  • Coralie Boatman 5 years ago

    His voice is too soothing. It feels like I’m watching ASMR and am about to fall asleep.

  • world of thugs 5 years ago

    Tha ks a lot sir u saved my day 😊😊love from India

  • William Monaghan 5 years ago

    comment section: “Leave a thumbs up is this man just saved your chemistry career just by doing this 20 min video.”
    me: makes 20 more youtube accounts to like that comment so “guy” feels good about his content and his actual contribution to society

  • jafrn nhr 5 years ago

    Sir thank u…u r the best explainer 🚶

  • mahdi M 5 years ago

    You are a hero, sir. God fucking bless you.

  • lrtx82 5 years ago

    In reference to your first example, BeCl2. I thought covalent bonds were between 2 nonmetals?

    • lrtx82 5 years ago

      Nevermind, looks that it was explained further in your comments by someone already. lol

  • lrtx82 5 years ago

    I realize that hydrogen seems to always go on the outside, but how come? Is it just the exception? Because isn’t Oxygen more electronegative than Hydrogen? I know Hydrogen is in Column 1A, so I always figured it was less electronegative. Just wondering, it’s got me a bit confused.

  • Lillyflower8 5 years ago


  • noor sh 5 years ago

    than you saaw much

  • Michael Mesfin 4 years ago

    can you please make a video on titration and buffer solution

  • Gemma McLaughlin 4 years ago

    his videos are the only chem videos i can watch that actually make sense. i love them.

  • Kiara D 4 years ago

    Is this the same as basic Lewis structure????

  • Kajus Narunas 4 years ago

    Isnt bent 105°??

  • Utkarsh Pandey 4 years ago

    Tyler saving asses since eternity.

  • Megan 4 years ago


  • Fire Master 4 years ago

    thank you so much….. It was so difficult for me till i saw this vidieo <3

  • Brittany Taft 4 years ago

    He seriously explains this concept so well! Bravo!

  • Dylan Tharp 4 years ago

    i don tlike my chem teacher

  • Jean Blanco 4 years ago

    Nice pedagogy job

  • Ana Karavidovic 4 years ago

    This is so good

  • BreakTheBlockdude 4 years ago

    this video is so good wowzers

  • This Needs To Change! 4 years ago

    Don’t you mean LIKE charges repel?

  • OG Mony 4 years ago

    thank yoooou sooooo much ❤️

  • Bigboss_tv 1 4 years ago

    He looks like logan paul

  • BlueIceAni 4 years ago

    holy heck my teacher is awful

  • Nayan Kumar 4 years ago

    Martin sun why dont you pay him the it’s just a matter of 5 million dollars

  • Prachi Jadhao 4 years ago

    Most satisfying video ever on vsepr….!!!!….#thxx #awsm😘😘

  • Denise Cooper 4 years ago

    The Lewis dot structure isn’t correct , but great video!!

  • Manshi Sinha 4 years ago


  • Venkatesh Arnold 4 years ago

    Hii sir firstly thank you for your videos and my small request is will you please do some videos about organic chemistry .Thank you sir.

  • Tijjani Alhmodu 4 years ago


  • arif bugga 4 years ago

    Please do not use the colors red and green . It is the most common Color blindness colors . Many color blind people will not be able to like it that much .

  • Maddie Carroll 4 years ago

    Thanks for this great video! 😀 It helped bunches!

  • Shahla 4 years ago

    You make me want to study Chemistry 🙂

  • Haneen Alloush 4 years ago

    You’re better than my teacher, thanks buddy

  • Chudi Mohtadi 4 years ago

    THank you

  • Virtuous Evian 4 years ago

    marry me 🙂

  • Mitchell Bonner 4 years ago

    could you swallow any harder

  • Connor Siebenaler 4 years ago

    Wait wouldn’t it just be Beryllium chloride not Beryllium dichloride since Be isn’t also a non-metal? Just asking because that is what I learned.

  • Ahcene Dahmane 4 years ago

    for NH3 it is just pyramidal ! thank you sir !

  • Courtney Sim 4 years ago

    Thank you so much !

  • Lewis Sison 4 years ago

    Umm, You are a better teacher than my own teacher.

  • Kwanele Ndzunga 4 years ago

    God bless you

  • Euro Queen 4 years ago

    Tyler, you are so wonderful. Thanks for the helpful video.

  • Euro Queen 4 years ago

    Tylor, God bless you. You are such a wonderful teacher. So much love & respects.

  • VeryPython3 4 years ago

    you can change the first example to complete the valence shell of the beryllium atom just saying

  • Karan Desai 4 years ago

    That was Awesome

  • Binti Hudda 4 years ago

    Very well representated .best video on vsepr theory ..got all my concepts clear

  • EarthWorm Sally 4 years ago

    Dude I couldn’t pass my chemistry class without you ..

    Thanks I appreciate all your videos my professor isn’t that fun watching as you again Thanks so much

  • EarthWorm Sally 4 years ago

    And BTW why don’t they make video Books I’ll watch your videos all the time

  • EarthWorm Sally 4 years ago

    Please make your videos with HD quality

    • Alex George 4 years ago

      Nature & Humanity it is

  • ᏕᏂᏋᏦᏂᏗᏒ ᎴᏂᎧᏖ 4 years ago


  • Rizwan Khushk 4 years ago

    But wont those two lone Electron pairs of H2O repulse each other to get away ? Bcz in 3D u have showen the 2 pairs are very much close to each other.

  • Mccullum Nasir 4 years ago

    Brilliant Stuff… Salute !

  • Siddharth Tripathy 4 years ago

    This guy is a very good teacher

  • Treven Ramasawmy 4 years ago

    the best teacher ever

  • Ibrahim Khan 4 years ago

    Best explanation!

  • Sulman Shafique 4 years ago

    Please do a video on VBT and MOT!

  • trezlyn 98 4 years ago

    Thank you sir.. Your video literally cleared all my doubts and misconceptions.

  • Zackde Dollar 4 years ago

    really love your videos…very interesting

  • Aziz Kash 4 years ago

    Soo hard

  • fatma abdulqawi 4 years ago

    How can I know if there is one bond or two or three in liner bond in BeCl, Co2,HCl

  • Jeevanlata Thakur 4 years ago

    Best tr in World

  • Cathy Blan 4 years ago

    You’re truly a gifted teacher! Thank you so much for all your videos.

  • deniz kaya 4 years ago

    keşke turkcesi olsaydı süper anlatmissiniz

  • shreyansh Khemesara 4 years ago

    In CH2O THE BOND angle is of 180 degree?

  • Believe Yourself 4 years ago

    You are awesome thanyou man 😇

  • henry sun 4 years ago

    U are a god

  • Sharon Gaines 4 years ago

    You are a fantastic teacher. Thank-you so much for your videos. You make chemistry understandable!

  • Asemahle20 4 years ago

    Thank you, I am actually having an exam today and yo have just made this so clear. POWERFUL

  • Sierra Martin 4 years ago

    This video saved my life tbh, my chem professor doesn’t know how to teach very well and my textbook doesn’t do a very good job of explaining VSEPR groups. Seeing all the examples in 3D like this helped so much!

  • Nhi Pham 4 years ago

    Thank God. YOU DESERVE more than those in Khan and Crash Crush. Thank you so so much!!

  • Liyana K.Hisam 4 years ago

    I can’t focus on the explanation. you are so damn good lookinggggg

  • Edward Smith 4 years ago

    Thank you for saving me throughout my premed in all my Chemistry Classes, you made Chemistry/easy to understand that I literally got a minor in biochem,THANK YOU SOOOOOO MUCH!!!!!!! My most favorite Youtube Professor, YOU ARE AMAZING!!!!! THANK YOOUUU SOOO MUCH!!!

  • Chemistry Guru - #1 JC, A Level, H2 Chemistry Tuition 4 years ago

    Hi Tyler!
    I am a full time Chemistry tutor in Singapore and was teaching VSEPR to my students when I came across your videos. and they are FANTASTIC! I am sharing my Chemistry knowledge on my Channel as well and I am glad to find an established YouTube educator who believes that showing your face in your videos DO make a difference in catching the student’s attention. I’ve featured your Channel on mine so hopefully you are cool with that. I’m really inspired by your success on YouTube. Hopefully I can do well too. Cheers!
    Best regards,

  • lalaland aqua 4 years ago

    This guy is saving my chem grade. God bless

  • Shabnam Ara 4 years ago

    Your videos are really very helpful. thankyou sir. May God bless you.

  • Devashish Chouhan 4 years ago

    but boron have 3 valence electrons

  • ollie tamale 4 years ago

    why did we cover this topic for a straight week in my class and i didnt get it, yet i watch this video not even halfway through and I feel like I completely understand VSEPR

  • Mary wazir 4 years ago

    **Mr. Tyler, I have a question regarding to the last example you gave, the bent shaped one with two pairs of electrons. I wanna know why the shape can’t be linear. Keeping t in mind, that if one pair of electrons stay at the top of the oxygen and the other at the bottom, both would repel equally and hence resulting to a linear shape. Why must the two pair of electrons stay at top and not repel each other?

    other than that, your videos are the best! Topics I get taught in days in college, you teach me that in a few minutes!

  • Caleb Mendoza 4 years ago

    i LIKED, SUBSCRIBED AND PUSHED the bell. this video helped me so much and I’m going to see the other videos thank you this video helped me. GREAT JOB

  • Chrissy S 4 years ago

    You Sir, are a gentleman and a scholar. My GPA and sanity thank you…as do thousands of others students I’m sure.

  • apl py 4 years ago

    Why do i get sad when these videos end

  • Nathan Cedric Philippe 4 years ago

    thx God that i meant you, i’ve a test for tomorrow and i’ve prepare anything xD

  • Kijestic Productions 4 years ago

    Thanks! Helped a lot!

  • Peace 4 years ago

    God bless ya for savin our lives..😂..2 long hours of lecture couldn’t get a single letter of VSEPR into my mind….DeWitt is LOVE….thanks tons buddy….continue savin lives !!!!

    • daniel letterman 3 years ago

      Supposedly god gave himself, which was the “son” to “save” us from hell, not to help you pass your chem exam.

  • Muhammed Sufiyan 4 years ago


  • Arex v10 4 years ago

    It makes sense now

  • Lewis Briese 4 years ago

    My school never explained the effect of lone pairs and I was so confused im so mad

  • Julia S 4 years ago

    This video helped a ton thank you

  • Naomi 4 years ago

    You have no idea how many times I said “OHHHHHHHHH”

  • Swedish Fish 4 years ago

    it’s safe to say he taught over 1 million student in his life time

  • Chelsea Girl 4 years ago

    Man this guy deserves an award! I really appreciate your detailed videos, thanks.

  • Cam Clark 4 years ago

    I’ll give you my car and my bank account if you fly to the uk and take my chemistry exams for me

    • Cam Clark 4 years ago

      Unless you work for aqa then I’m only joking…

  • Thomas Spriggs 4 years ago

    Thank you chemistry god.

  • naveen dash 4 years ago

    You saved my life dude!

  • Connie Barth 4 years ago

    Thank you for making these videos. You are much appreciated!


    opposite charges repels 🤔

  • Navaneeth Krishnan 4 years ago

    Omg dude, thank you so much for this video. This has helped me grasp concepts and it has also made chemistry a lot more intriguing. Thank you once again.

  • Rahma Banistany 4 years ago

    Thanks alot I’ve learned sooo much from u,am gonna share this vedio with my friends 2 👌🏻😊

  • raynard chew 4 years ago

    I actually come to the comment section to confirm if this video is good or waste of time until i saw someone saying ” this guy deserves 5 million dollars for his video”

  • Veeral Solanki 4 years ago

    Fucking Legend


    Me:skipping to quickly see those structures with the angles,cuz it exam tmrw(12AM),rite now!!

  • Pranjal 4 years ago

    What were those? At 2:15

  • 차호영 4 years ago

    Your lectures are really, really, really good for not only students who need a foundation in chemistry, but also college students who need to organize. I really recommend them.

  • Rhea M 4 years ago

    Thank you!

  • A Dhaliwal 4 years ago

    Really your teaching methods are brilliant . Thanks a lot
    Please make vedios on hybridisation also

  • Yari Mar 4 years ago

    literally you teach chem so easy
    thank you!

  • Rohit Kumar Pandey 4 years ago

    Sir u r great

  • Uday Raj Kafle 4 years ago

    Sir you made a mistake on 7:47 to 7:51.

  • Sheena Rodriguez 4 years ago

    The most amazing chemistry teacher ever.

  • quantised 4 years ago

    Even though chemistry is not my cup of tea, I can still listen and learn from you all day long and not get tired. You take things slowly and comfortably. 🙂

  • Kritika Tiwari 4 years ago

    i feel happy that god has made such mens who understand the problems faced by us and resolve ot completely

  • steph ko 4 years ago


  • sankar bhavani 4 years ago

    awsome explanation. liked it very much

  • SAND 4 years ago

    I have became your fan

  • saurav kumar phookan 4 years ago

    Thank you

  • Sangita Mukherjee 4 years ago

    why does water has 104.5 degree btw the bonds but SO2 has 119 degree although both have a bent structure ?

  • Basim Anees 4 years ago

    Really nice…

  • 김Ayame 4 years ago

    God bless you sir, it has been great help.

  • Vedic Astrology Solutions 4 years ago

    You deserve atleast 5 Milllion Subscribers

  • Liz MacAskill 4 years ago

    This is incredibly helpful. Love your videos. Thank you!

  • Asifadvocate advocate 4 years ago

    Very good but I need the model of molecules of Methane

  • Risa Hohn 4 years ago

    Thank you so much for making this video! I couldn’t understand the pictures on my book, but this video and your explanation makes it easier for me to get the concept. You’re a real educator…

  • It's the fox! 4 years ago

    1:38 You mean same charges repel
    7:47 You mean 120° not 180°
    Good video though 😉

  • Isuru Silva 4 years ago

    Awesome. Thank you sir.

  • Earning with fun 4 years ago


  • sharda iyer 4 years ago

    That 3d models made me understand this concept really good.

  • Qilin Xue 4 years ago

    10:50 Does the unpaired electrons push harder because it’s closer to the central atom?

  • kavitha shanker 4 years ago

    How can we make those models?

  • Fadheelah Faleel 4 years ago

    This was very informative and nicely explained

  • SBB YT 4 years ago

    7:48 nope it’s 120•
    Anyways I’m so happy with your explanation

  • king king 4 years ago


  • Subash Rawat 4 years ago

    Life saver!!

  • Giovana Santana da Silva 4 years ago

    It was perfect! You helped me a lot! Thanks!!!

  • ayesha 4 years ago

    Suddenly I am more interested in Chemistry. Clear, well-explained concepts with such an amazing atmosphere. Loved every single minute. Though I barely spend 20 minutes on videos relating to Chemistry, this video has definitely changed my view on Chemistry. 11/10 would recommend. Thanks a lot for this video.

    • Imrankhan Pcdc 4 years ago


  • Alison M 4 years ago

    Please tell me you have videos for Organic Chem too

  • Noora Alali 4 years ago

    hello.. I want to ask if you can upload a video about Hybridization please.. your videos are helpful and you have a good way to explain the material..thanks for your effort

  • jnhyjere ng 4 years ago

    See the left hand at 0:11

  • Anonymous 4 years ago

    It’s sad that some gamers or viners are much more recognised than you. You are a legend Mann. Thank you so much. A hero. 👏🏻

  • Seema Singh 4 years ago

    this is best method of teaching

  • Rasagulah 4 years ago

    I wish our teachers could teach us so well, with all these geometrical objects, but they just hand over the notes and it pretty much sucks.
    We now know why teaching in India sucks

  • Richard Yin 4 years ago

    do you have a video the Lewis structure, or electron dot formula??

  • Ali Ismael 4 years ago

    may god bless you with whatever you want in life man. LIfE sAvEr

  • Chris Cartwright 4 years ago

    Main lesson learned today: Electrons are really anti-social.