JEE Main Chemistry question

Among the resonance structures shown for the given conjugated amino-carbonyl diene system, the least stable is

(A)The contributor with an unfavorable adjacent-charge or non-octet arrangementCorrect
(B)A contributor with charge separation delocalized onto the terminal carbon
(C)A contributor with charge separation delocalized onto the oxygen
(D)A contributor retaining full conjugation with minimal charge separation

Answer: (A)

Solution

Among resonance contributors of a conjugated system, those placing like charges adjacent to one another, or breaking conjugation without

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Question ID VK-139051