2E.21 c

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

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Ryan Chang 1C
Posts: 75
Joined: Sat Aug 24, 2019 12:17 am

2E.21 c

Postby Ryan Chang 1C » Fri Nov 15, 2019 5:28 pm

For SO2Cl2, the solutions say that there are two possible dot structures. One of them has a double bond and 2 lone pairs attached to the oxygen, while the other has a single bond and 3 lone pairs attached to the oxygen. I understand how the reasoning behind both dot structures, but does Dr. Lavelle prefer one over the other? Which one should we put on a test or should we put both.

Connor Ho 1B
Posts: 65
Joined: Sat Aug 17, 2019 12:17 am

Re: 2E.21 c

Postby Connor Ho 1B » Fri Nov 15, 2019 6:25 pm

I believe the better lewis structure is the one that represents the S-O bonding as a double bond. This has a more realistic formal charge compared to the other structure.

Alan Wu
Posts: 61
Joined: Sat Sep 14, 2019 12:16 am

Re: 2E.21 c

Postby Alan Wu » Fri Nov 15, 2019 6:27 pm

Definitely the one with the double bond between S and O. That gives O a formal charge of zero. In general, you should always try giving O or any Group 16 element a double bond and 2 lone pairs if possible.


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