The cyclic cations having the same number of | vedclass

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(A) Hyperconjugation is determined by the number of $\alpha$-hydrogens attached to the carbon atoms directly bonded to the positively charged carbocat

Vedclass · Accepted Answer

$A$ and $C$ Only

Vedclass · Answer

(A) Hyperconjugation is determined by the number of $\alpha$-hydrogens attached to the carbon atoms directly bonded to the positively charged carbocation center.$A$: The carbocation is bonded to two ring carbons and one methyl group. The $\alpha$-hydrogens are: $2$ (from $CH_2$ of ring) + $2$ (from $CH_2$ of ring) + $2$ (from $CH_3$) = $6 \alpha H$.$B$: The carbocation is bonded to two ring carbons and one methyl group. The $\alpha$-hydrogens are: $2$ (from $CH_2$ of ring) + $2$ (from $CH_2$ of ring) + $3$ (from $CH_3$) = $7 \alpha H$.$C$: The carbocation is bonded to two ring carbons. The $\alpha$-hydrogens are: $2$ (from $CH_2$ of ring) + $2$ (from $CH_2$ of ring) + $2$ (from $CH_2$ of ethyl group) = $6 \alpha H$.$D$: The carbocation is bonded to two ring carbons and one ethyl group. The $\alpha$-hydrogens are: $2$ (from $CH_2$ of ring) + $2$ (from $CH_2$ of ring) + $1$ (from $CH$ of ethyl group) = $5 \alpha H$.Thus, structures $A$ and $C$ have the same number of hyperconjugation ($6 \alpha H$ each).

The cyclic cations having the same number of hyperconjugation are: Choose the correct answer from the options given below:

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