CHEMISTRY COMMUNITY

VSEPR Theory – Basic Introduction
VSEPR Theory – Basic Introduction

Has Dr. Lavelle outlined which shapes of molecular geometry we will need to study for the midterm? Will we need to memorize all bond angles, including those distorted by an electron pair?
If someone could link me to a chart that has all of the shapes and their bond angles that would be great! Thank you!

Molecular Geometry

(Polar molecules, Non-polar molecules, etc.)

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Posts: 100
Joined: Fri Sep 24, 2021 7:05 am
Posts: 100
Joined: Fri Sep 24, 2021 5:27 am

Re: Molecular Geometry

I believe Dr. Lavelle would mention more molecular shapes in next week’s class. But I believe we don’t need to memorize all the bond angles caused by electron pairs. We should know that lone pairs have higher repulsion and make the bond angle smaller.

Posts: 51
Joined: Fri Sep 24, 2021 7:12 am

Re: Molecular Geometry

The molecular shapes we’ve gone over in lectures include: linear, bent, trigonal planar, tetrahedral, trigonal bi-pyramidal, octahedral, trigonal pyramidal. I’m not sure if we must memorize all bond angles, but if you understand the shapes, you should be able to figure out what the bond angles are (ex. in trigonal planar, there’s 3 atoms surrounding one atom, which would equate to 360 degrees divided by 3, giving you bond angles of 120 degrees). This is a chart I find helpful: https://i.pinimg.com/originals/8c/76/d0 … bf7f24.png

Re: Molecular Geometry

I think I’m going to review all of the vsepr models, even the ones we didn’t go over in class, just to be safe.

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