Which of the following is the least stable re | vedclass

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(A) The stability of resonance structures is determined by several rules: $1$. Structures with more covalent bonds are more stable. $2$. Structures wi

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(A) The stability of resonance structures is determined by several rules: $1$. Structures with more covalent bonds are more stable. $2$. Structures with complete octets for all atoms are more stable. $3$. Structures with less charge separation are more stable. $4$. Negative charge should be on the more electronegative atom,and positive charge should be on the less electronegative atom. In structure $A$,there is a negative charge on a carbon atom adjacent to a positive charge on another carbon atom,and a positive charge on the nitrogen atom. This structure involves significant charge separation and places a positive charge on an electronegative nitrogen atom while having adjacent opposite charges,making it highly unstable compared to others where charges are more effectively delocalized or separated.

Which of the following is the least stable resonance structure?

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