NO+

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Stacey Phan 2I
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NO+

Postby Stacey Phan 2I » Thu Nov 19, 2020 12:28 am

Hi, I was doing one of the textbook questions (2B.19 part a) and I was wondering why there is a triple bond between N and O. Is it because you want the more positive formal charge on the less electronegative atom?

Andrew Wang 1C
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Re: NO+

Postby Andrew Wang 1C » Thu Nov 19, 2020 12:34 am

A triple bond between the N and O is the only way for both atoms to have a full octet.

Stacey Phan 2I
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Re: NO+

Postby Stacey Phan 2I » Thu Nov 19, 2020 12:54 am

Andrew Wang 1G wrote:A triple bond between the N and O is the only way for both atoms to have a full octet.


that makes so much more sense thank you!

Saumya Tawakley 1E
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Re: NO+

Postby Saumya Tawakley 1E » Thu Nov 19, 2020 1:13 am

I was really confused on this as well! A good way to remember this is that octet guideline takes precedence over formal charge - we (generally) want to complete the octet before considering formal charges.

Another good example of this is CO, where there is a triple bond between C and O and one lone pair on each atom, giving each a complete octet and a formal charge of -1 on the carbon and +1 on oxygen.


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