VSEPR Theory & Molecular Geometry - AP Chem Unit 2, Topic 7B

*Guided notes for these AP Chem videos are now included in the Ultimate Review Packet!* Find them at the start of each unit. All materials for Units 1 and 2 are included in the free trial!

In this video, Mr. Krug shows students how the VSEPR Theory applies to molecular compounds and helps explain why they take certain shapes. He shows students how to predict the molecular geometries and bond angles of multiple structures. At the end of the video, he shows how to predict the polarity of a molecule.

00:00 Introduction to VSEPR Theory
01:25 Molecular Geometry and Bond Angle
08:57 Geometry - Expanded Octets
12:10 Summary of Molecular Shape
13:00 Polar and Nonpolar Molecules

[walruswarlord]

If anyone is watching these now, a week before the exam, it is important to note that despite having lone pairs, square planar molecules are NON-polar!

[RelaxZone-]

You know, I have been searching on YouTube for like a week to understand this concept rather than just catching it without any sense, but now I fully get and understand everything behind it. Thank you so much, sir!

[pluto]

I love your videos so much keep making them ❤❤❤❤❤❤❤

[evelyn]

Thank you so much! I just learned the entire unit my teacher didn't teach well all in one evening using your videos. I feel so much more confident about my test tomorrow. Thank you for this amazing content!

[_tranhoangtuan]

thank you for teaching and sharing your genuine understanding of the subject

[MariaGutierrezMartinez-mt]

i wish you were my PROFESSOR, thank you very much Mr. Krug, youre literally saving my lifeee

[Tanish_Naladkar]

Thank you so much, your videos cleared up a lot of confusions!

[Pablo-jwhm]

My AP exam in 4 days I wasnt understanding anything now I Have some hope thx

[Jake-ccie]

12:38 - isn’t T-Shaped two lone pairs and three bonded atoms?

[wfwwjev]

How do I determine whether the molecule is lobsided or not? is it if the central atom has a lone pair?

[dragongirl]

what happens if there are 2 or more unshared pairs of electrons on the central molecule? how does that affect the polarity

[revathiguhan]

Hi Mr Krug. Thanks so much for these amazing video!! your lessons are very helpful. I had one question about the angle for 3 sigma bonds and 2 lone pairs.. is it actually 120 ? or should it less than 90? Thank you

[Eternity-]

When drawing a Lewis diagram do we need to account for the molecular geometry??? If we don’t do we lose points on exams 😢

[WassemIbraheem]

Do you have any suggestions to memorizing this?