Which of the following has the shortest C - C | vedclass

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(D) The bond length of $C - C$ depends on the hybridization of the carbon atoms involved.$1$. In $CH_3 - CH_2 - CH_3$ and $CH_3 - CH_2 - CH_2 - CH_3$,

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$CH \equiv C - C \equiv CH$

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(D) The bond length of $C - C$ depends on the hybridization of the carbon atoms involved.$1$. In $CH_3 - CH_2 - CH_3$ and $CH_3 - CH_2 - CH_2 - CH_3$,the $C - C$ bond is between $sp^3$ and $sp^3$ hybridized carbons.$2$. In $CH_2 = CH - CH = CH_2$ ($1$,$3$-butadiene),the central $C - C$ bond is between $sp^2$ and $sp^2$ hybridized carbons.$3$. In $CH \equiv C - C \equiv CH$ (butadiyne),the central $C - C$ bond is between $sp$ and $sp$ hybridized carbons.As the $s$-character increases,the bond length decreases.$sp^3 - sp^3$ $(25\% \ s)$ > $sp^2 - sp^2$ $(33.3\% \ s)$ > $sp - sp$ $(50\% \ s)$.Therefore,the $C - C$ bond in $CH \equiv C - C \equiv CH$ is the shortest.

Which of the following has the shortest $C - C$ bond length?

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