Difference Between Lewis Structure and VSEPR Model

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Sean Sugai 4E
Posts: 56
Joined: Wed Sep 11, 2019 12:17 am

Difference Between Lewis Structure and VSEPR Model

Postby Sean Sugai 4E » Mon Nov 11, 2019 12:41 am

What are the differences between lewis structures and VSEPR model? Also, what are the rules when doing VSPER models and is there an easy way of thinking about them?

Khushboo_3D
Posts: 60
Joined: Wed Sep 18, 2019 12:19 am

Re: Difference Between Lewis Structure and VSEPR Model

Postby Khushboo_3D » Mon Nov 11, 2019 9:30 am

According to my understanding of it, the Lewis structure tells us about the electronic structure of an atom, it tells us about about bond lengths, bond strengths etc.
The VSEPR model tells us about the molecular geometry- that is the shape of the molecule.

Christineg1G
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Re: Difference Between Lewis Structure and VSEPR Model

Postby Christineg1G » Mon Nov 11, 2019 10:03 am

A lewis structure is a dot diagram that shows the valence electrons as well as various bonds present in elements. While VSEPR is used to draw and name the different molecular shapes like bent, linear, tetrahedral, etc. These shapes are determined based off of the lewis structure and the VSEPR theory.

Shutong Hou_1F
Posts: 117
Joined: Sat Sep 14, 2019 12:17 am

Re: Difference Between Lewis Structure and VSEPR Model

Postby Shutong Hou_1F » Mon Nov 11, 2019 10:58 pm

Lewis structure clearly shows number of atoms, valence electrons, and types of bonds in a simple way. However, unlike the VSEPR model, Lewis structure doesn't represent the shape of the molecule or bond angles.


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