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I think the overall formal charge should be the same for each resonance structure, the formal charges of the individual elements in the molecule could be different because of the different bond placements, but overall I think it should be the same.
Resonance structures when drawn are generally the same with the differences being the location of the bond (i.e. single/double/triple). Formal charges should correspond to the element depending on the bond connecting it to the central element.
No, resonance structures do not have to have the same formal charge for each element. however, the overall formal charge should be the same. For example, if it was No3-, overall it should have a -1 formal charge for the -
Raquel Floyd 1K wrote:So can a molecule still "have resonance" even if there is one structure that is the most stable form of it?
I had the same question and I asked in TA office hours and they said yes. When we are doing resonance we will probably mostly see resonance as moving the double or triple bonds around but there may be some cases like you mentioned. Hope that helps!
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