Q.

Which of the following does not represent the resonating structure of

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a

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b

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c

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d

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answer is B.

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Detailed Solution

In structure (1), (3) and (4), positive or negative charge is in conjugation with double bond, thus are resonance structures.

In (2), there are unpaired electrons whereas others have no unpaired electrons.

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Which of the following does not represent the resonating structure of