In which of the following compounds will the | vedclass

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(C) The carbon-carbon double bond length increases with the number of $\alpha$-hydrogens due to hyperconjugation.Hyperconjugation delocalizes the $\si

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$CH_3-C(CH_3)=C(CH_3)-CH_3$

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(C) The carbon-carbon double bond length increases with the number of $\alpha$-hydrogens due to hyperconjugation.Hyperconjugation delocalizes the $\sigma$-electrons of the $C-H$ bond into the $\pi$-system,giving the double bond some single bond character and thus increasing its length.Among the given options,$CH_3-C(CH_3)=C(CH_3)-CH_3$ has the maximum number of $\alpha$-hydrogens $(12)$,resulting in the longest $C=C$ bond.

In which of the following compounds will the carbon-carbon double bond length be maximum?

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