molecular shape and bond angles

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

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Alyssa Bryan 3F
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Joined: Fri Sep 28, 2018 12:26 am
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molecular shape and bond angles

Postby Alyssa Bryan 3F » Sun Nov 18, 2018 5:24 pm

What molecular shapes do we need to know the exact bond angles of and what molecular shapes do we need know that are less than 120 or 109.5 and not the exact angles?

Nicoline Breytenbach 3D
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Re: molecular shape and bond angles

Postby Nicoline Breytenbach 3D » Sun Nov 18, 2018 5:29 pm

When there are lone pairs involved in the molecule, the resulting bond angles will usually be "less than" a specific number, and we don't have to memorize the actual values specifically.

Timothy_Yueh_4L
Posts: 57
Joined: Fri Sep 28, 2018 12:28 am

Re: molecular shape and bond angles

Postby Timothy_Yueh_4L » Sun Nov 18, 2018 5:34 pm

I believe we need to know more or less the bond angles for most shapes, but not the actual values of particular molecules. Here is a image of the ideal bond angles of different shapes: Image

Maya_Peterson1C
Posts: 62
Joined: Fri Sep 28, 2018 12:28 am

Re: molecular shape and bond angles

Postby Maya_Peterson1C » Sun Nov 18, 2018 6:27 pm

I think we just need to know the angles for the basic geometry (electron density geometry) because those values are known and consistent I believe (like 90, 120, 180 degrees). For the electron density geometry, I think we just need to know how the lone pairs affect the bond angles.


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