1.

Predict the relative energies of the following resonating structures .

Answer»

Solution :Structures (A) FOLLOWS all the GUIDELINES as per points (1) to (4) above .
Structure (B) violates point (2) because it has TWO formal charges .
Structure (C ) violates points (2) and (3) because it has two formal charges and carries a negative charge on carbon atom . RESPECTIVELY .


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