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Question

Correct order of bond length among the following is:

A
C=O>C=C>C=N
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B
C=O>C=N>C=C
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C
C=C>C=N>C=O
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D
C=N>C=C>C=O
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Solution

The correct option is B C=C>C=N>C=O
Bond length of C=O is 120 pm. Bond length of C=N is 129 pm. Bond length of C=C is 134 pm. On moving from left to right in periodic table size of atom decreases. Therefore the correct order of bond length is C=C>C=N>C=O. The correct option is C.

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