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Reactions of Alkyl Halides

The most stab...

Question

The most stable carbocation is:

C H \equiv ⨁ C

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C H_{2} = ⨁ C H

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C H_{3} - ⨁ C H_{2}

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Solution

The correct option is D $C H_{3} - ⨁ C H_{2}$
$C H \equiv \oplus C ⟶$ $s p$ carbon atom, $50$ % $s$ -character hence more electronegative & less stable carbocation.
$C H_{2} = \oplus C H ⟶ s p^{2}$ carbon atom, more stable than $C H \equiv \oplus C H$ but less than $C H_{3} - \oplus C H_{2}$ .
$C H_{3} - \oplus C H_{2} ⟶ s p^{3}$ carbon atom, most stable carbocation .
Hence, answer is $C H_{3} - \oplus C H_{2}$ .

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