4.95 6th ed

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

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805098281
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Joined: Fri Sep 28, 2018 12:26 am

4.95 6th ed

Postby 805098281 » Thu Nov 29, 2018 1:18 pm

For the first part of the question, it asks to draw the most important lewis structure, but how can one structure be more important than another when you're given the molecule CH2=CHCHO?

Jonathan Zhao 4H
Posts: 57
Joined: Fri Sep 28, 2018 12:26 am

Re: 4.95 6th ed

Postby Jonathan Zhao 4H » Thu Nov 29, 2018 2:45 pm

I believe it is asking for the lewis structure with the greatest contribution to the resonance, so essentially the most stable structure.

Tessa Lawler 1A
Posts: 57
Joined: Fri Sep 28, 2018 12:18 am

Re: 4.95 6th ed

Postby Tessa Lawler 1A » Sun Dec 02, 2018 8:21 pm

You'd probably want to draw the most stable structure (a good idea generally). So, the structure in which the most atoms in the molecule have a formal charge of 0.

Ethan Breaux 2F
Posts: 63
Joined: Sat Sep 29, 2018 12:16 am

Re: 4.95 6th ed

Postby Ethan Breaux 2F » Sun Dec 02, 2018 9:06 pm

Just use formal charge formula FC = Valence - [lone pair electrons - (shared electrons/2)]


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