Determining VSEPR Model

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

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Determining VSEPR Model

Postby FDeCastro_1B » Sat Nov 16, 2019 3:03 pm

Are formal charges to be considered when drawing the Lewis structure to correctly name the VSEPR model?

Aadil Rehan 1D
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Re: Determining VSEPR Model

Postby Aadil Rehan 1D » Sat Nov 16, 2019 3:10 pm

A "proper" (i.e. lowest-energy) Lewis structure has the formal charges done correctly. The shape that the molecule assumes in nature will be that of lowest energy. So technically, yes, you should take formal charges into account when naming shape, but no more than you would for making a normal Lewis structure.

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Re: Determining VSEPR Model

Postby KeyaV1C » Sat Nov 16, 2019 3:11 pm

I don’t think it should matter since it’s the atom positions that are used to determine the name of the VSEPR shape.

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Re: Determining VSEPR Model

Postby 305416361 » Sat Nov 16, 2019 3:16 pm

Theoretically yes, however I think when determining VSEPR model, it is assumed that the formal charge of the lewis structure at hand is already 0, or as close to 0 as it can be.

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