carbon monoxide formal charges

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Jared_Yuge
Posts: 69
Joined: Sat Aug 17, 2019 12:17 am

carbon monoxide formal charges

Postby Jared_Yuge » Sun Nov 10, 2019 11:43 pm

Why does carbon monoxide have a +1 charge on the oxygen and a -1 charge on the carbon?

John Arambulo 1I
Posts: 58
Joined: Sat Jul 20, 2019 12:15 am

Re: carbon monoxide formal charges

Postby John Arambulo 1I » Sun Nov 10, 2019 11:46 pm

Because that is the only way to attain a neutral structure with an overall charge of 0.

vpena_1I
Posts: 81
Joined: Sat Aug 24, 2019 12:15 am

Re: carbon monoxide formal charges

Postby vpena_1I » Sun Nov 10, 2019 11:48 pm

A triple bond between the C and O gives them both a full octet with the 10 available electrons. Because each has a lone pair, you end up with a positive and negative charge. This, however, cancels out. Any other configuration would get you a formal charge even further away from 0.

BryantChung_4B
Posts: 45
Joined: Sat Aug 24, 2019 12:17 am

Re: carbon monoxide formal charges

Postby BryantChung_4B » Mon Nov 25, 2019 3:57 am

Simple formal charge calculations. The carbon atom, for example, has 4 valence electrons, but if you take the electrons in a CO molecule (2 lone electrons and 3 bonded electron pairs) you will get 4 - 5 = -1 formal charge.

AronCainBayot2K
Posts: 86
Joined: Fri Aug 30, 2019 12:17 am

Re: carbon monoxide formal charges

Postby AronCainBayot2K » Mon Nov 25, 2019 7:31 am

This is due to the lewis structure as carbon monoxide requires a triple bond to fulfill the 10 valence electrons needed in the structure. Furthermore when conducting formal charge, carbon would have a +1 charge while oxygen would have a -1 charge.


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