double bonds in NO3-

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clairedisc3b
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Joined: Fri Sep 29, 2017 7:07 am

double bonds in NO3-

Postby clairedisc3b » Thu Nov 09, 2017 4:02 pm

Hi, for the structure of NO3- there is one double bond bet. N-O, my question is why aren't they all double bonds? ie 3 double bonds.

Lucian1F
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Re: double bonds in NO3-

Postby Lucian1F » Thu Nov 09, 2017 4:05 pm

If there were 3 double bonds then nitrogen would have more than an octet (it would have 12 electrons in its valence shell) but nitrogen is only in the second period so it cannot have more than 8 valence electrons. Also, this would make the formal charges of nitrogen and oxygen much farther from 0, which means the molecule is much more unstable.

Sophia Bozone 2G
Posts: 51
Joined: Fri Sep 29, 2017 7:07 am

Re: double bonds in NO3-

Postby Sophia Bozone 2G » Sun Nov 12, 2017 10:39 pm

Nitrogen will stick pretty closely to the octet rule, and if all the bonds were double bonds, the formal charges would indicate the [censored] would not be the most stable molecule.


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