HCO3- Lewis Structure

Oct 2016
1
0
San Antonio, TX
I was wondering if there are 2 versions of drawing the Lewis Structure for HCO3-, or if only the top one is correct? If so, could you possibly explain why it is one over the other and how I make that decision? (please see attachment!)

Thanks!! :)
 

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topsquark

Forum Staff
Jul 2013
56
1
Any place where Alyson Hannigan can find me
I was wondering if there are 2 versions of drawing the Lewis Structure for HCO3-, or if only the top one is correct? If so, could you possibly explain why it is one over the other and how I make that decision? (please see attachment!)

Thanks!! :)
Could the two be isomers?

I'm looking at the oxygen in the second diagram that is double bonded with the carbon. It's sharing an awful lot of bonds when it typically only uses two bonds. ie. -O- as opposed to =O- . I can't think of a specific reason to exclude it but the oxygen seems overburdened and that probably means it's energetically unstable.

-Dan