structure stability

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Emma Joy Schaetz 1E
Posts: 43
Joined: Wed Sep 18, 2019 12:16 am

structure stability

Postby Emma Joy Schaetz 1E » Sun Nov 03, 2019 5:07 pm

I understand that there are resonance structures but I do not understand what bond order is or how to decide the most stable structure. Can someone help me understand this?

Charisse Vu 1H
Posts: 101
Joined: Thu Jul 25, 2019 12:17 am

Re: structure stability

Postby Charisse Vu 1H » Sun Nov 03, 2019 5:11 pm

Bond order is simply the number of bonds that link a specific pair of atoms (from the textbook). For example, the bond order in the molecule is three, since they are bound by a triple bond. To determine the most stable structure, you should try to get the formal charges on each atom of the molecule as close to zero as possible. You also want to try to not have a charge on the center atom. To find the most stable structures, just remember to maximize resonance and minimize the charge distribution!

Ruby Tang 2J
Posts: 102
Joined: Fri Aug 30, 2019 12:15 am

Re: structure stability

Postby Ruby Tang 2J » Sun Nov 03, 2019 7:41 pm

To add on, if you know that one of the atoms has to carry a nonzero formal charge (ie. the overall charge of the molecule is nonzero) but aren't sure which atom to put it on, put the more negative formal charge on the more electronegative atom

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