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Question

In the following molecule, the C2 − C3 bond length is shorter than the usual C−C bond length. The reason for this observation is ______
C=C(2)−C(3)=C

A

Odd electrons

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B

Incomplete octet

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C

Resonance

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D

Extented Octet

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Solution

The correct option is C

Resonance


The given molecule has a resonance structure because of the alternate double bonds.

Thus there is some double bond character present in C2 C3, which makes it shorter.


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