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Resonance

Predict the r...

Question

Predict the relative bond lengths a and b, in napthalene

A

a > b

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B

a < b

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C

a = b

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D

none of these

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Solution

The correct option is B
a < b

From the resonating structures of naphthalene, it is evident that the bond a is double bond in two of the three resonating structures, while bond b is a double bond only in one of the three resonating structures.

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