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  • Which one of the following has highest C-N bond length Option: 1 <img alt="" src="https://cdn.entrance360.com/media/uploads/2018/07/09/18385a.jp

Which one of the following has highest C-N bond length 

Option: 1


Option: 2

CH_3 - CH = CH - NO_2


Option: 3


Option: 4


Answers (1)

best_answer

In  - NO_2  group is not in resonance or say it can not show - M effect, but in all other given options, it is in resonance.

Due to resonance C-N attains a double bond character which decreases the bond length.

But option 3 compound does not show resonance between benzene and -NO2 group.

So, option 3 is correct.

Posted by

shivangi.bhatnagar

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