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

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Jessica Wakefield 1H
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Joined: Thu Jul 27, 2017 3:00 am


Postby Jessica Wakefield 1H » Sun Nov 26, 2017 1:49 pm

The Lewis structure for part a of 4.23 (OSbCl3) shows Sb as the central atom with four single bonds and O has 3 lone pairs. Would an acceptable structure also be a double bond for O and 2 lone pairs or is there a specific reason why O has 3 lone pairs and not 2?

Remi Lathrop 1G
Posts: 51
Joined: Fri Sep 29, 2017 7:07 am

Re: 4.23

Postby Remi Lathrop 1G » Sun Nov 26, 2017 2:14 pm

I'm fairly certain that having a double bond between Sb and O would be acceptable as well since making a double bond between Sb and O gives both atoms a formal charge of zero.

Andy Liao 1B
Posts: 52
Joined: Thu Jul 13, 2017 3:00 am

Re: 4.23

Postby Andy Liao 1B » Sun Nov 26, 2017 6:28 pm

Yes, if the central atom were to form a double bond with the oxygen, the structure would be more stable due to the lowering of formal charge. However, regardless of which structure is drawn, the shape of the molecule stays the same. OSbCl3 is tetrahedral.

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