The total number of contributing structures s | vedclass

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(C) The carbon atom directly attached to the positively charged carbon is called the $\alpha$-carbon,and the hydrogen atoms attached to these $\alpha$

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$6$

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(C) The carbon atom directly attached to the positively charged carbon is called the $\alpha$-carbon,and the hydrogen atoms attached to these $\alpha$-carbons are called $\alpha$-hydrogens.In the given carbocation,the central carbocation is attached to:$1$. $A$ methyl group $(-CH_3)$,which has $3$ $\alpha$-hydrogens.$2$. An ethyl group $(-CH_2CH_3)$,which has $2$ $\alpha$-hydrogens.$3$. $A$ cyclohexyl group,which has $1$ $\alpha$-hydrogen (at the bridgehead position attached to the carbocation).Total number of $\alpha$-hydrogens = $3 + 2 + 1 = 6$.The number of hyperconjugative structures is equal to the number of $\alpha$-hydrogens,which is $6$.

The total number of contributing structures showing hyperconjugation (involving $C-H$ bonds) for the following carbocation is

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