Hydrocarbons Question 130

Question: Shortest C-C bond length is present in [BVP 2004]

Options:

A) $ CH_3-CH_2-CH_3 $

B) $ CH_3CH_2CH_2CH_3 $

C) $ CH_2=CH-CH=CH_2 $

D) $ CH\equiv C-C\equiv CH $

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Answer:

Correct Answer: D

Solution:

Bond length decrease with increase in Bond order.

Hence triple bonded carbon has minimum bond length.

$ CCbondlength=1.54{\AA} $

$ C=Cbondlength=1.33{\AA} $

$ C~Cbondlength=1.22{\AA} $