Textbook 2E15B

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

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Connie Liang 3L
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Textbook 2E15B

Postby Connie Liang 3L » Sun Dec 06, 2020 9:06 pm

How come in the answer manual the bond angles are approximately 120 degrees and 90 degrees and not less than 120 degrees and less than 90 degrees? Isn't a see saw shape supposed to mean that the bond angles are "less than" because there's a lone pair?

SophiaBarden 2E
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Re: Textbook 2E15B

Postby SophiaBarden 2E » Sun Dec 06, 2020 9:10 pm

Yes but actually calculating bond angles are beyond the scope of this class so most of the time, we just state that the angles are approximations

Edward Tang 1k
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Re: Textbook 2E15B

Postby Edward Tang 1k » Sun Dec 06, 2020 9:13 pm

They are pretty close to 90 and 120 so saying approximately is pretty much equivalent to saying less than

Connie Liang 3L
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Re: Textbook 2E15B

Postby Connie Liang 3L » Sun Dec 06, 2020 9:17 pm

Got it. I was confused because for other questions the answer had "less than" so I was wondering why didn't this one have it too. Thanks for clarifying.


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