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Hyperconjugation

In which of t...

Question

In which of the following cases, the carbocation (I) is less stable than the carbocation (II) ?

C_{6} H_{5} + C H_{2} (I), C H_{2} = C H 2 + C H_{2} (I I)

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H_{3} C + C H_{2} (I), C H_{2} - ⨁ C H_{2} (I I)

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C H_{2} + C H (I), C H_{3} - + C H_{2} (I I)

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None of these

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Solution

The correct option is C $C H_{2} + C H (I), C H_{3} - + C H_{2} (I I)$
In A,
I is more stable due more resonance structures of benzene.
In B,
I is more stable due to complete octet.
In C,
II is more stable due to complete octet.

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Similar questions

C H_{2} = C H + C H_{2} (I I), C_{6} H_{5} + C H_{2} (I I I) a n d C H_{3} + C H C H_{3} (I V)

C H_{2} = C H - + C H_{2} and C H_{2} = C H - C H_{2} - + C H_{2}

C H_{3} - N H - + C H_{2} and + C H_{2} - O H

C H_{3} - O - C H_{2} - + C H_{2} and C H_{2} - O - + C H_{2}

C H_{3} - + C H - C H_{2} C H_{2} C H_{3} and C H_{3} C H_{2} - + C H - C H_{2} C H_{3}

C_{6} H_{5} - O | | C - C H_{2} I

(i) O H^{-} - ---- \to (i i) H_{3} 0^{+}

C_{6} H_{5} - C H_{2} - C H_{2} - O | | C - C H_{2} I

(i) N a O H a n d I_{2} - --------- \to (i i) H_{3} O^{+}

P

Q

C_{6} H_{5} \leftarrow C H_{2}

C_{6} H_{5} \leftarrow C H_{2} C H_{2}

C_{6} H_{5} \leftarrow C H \leftarrow C H_{3}

C_{6} H_{5} \leftarrow C (C H_{3})_{2}

C_{6} H_{5} \oplus C H_{2}

C_{6} H_{5} C H_{2} \oplus C H_{2}

C_{6} H_{5} \oplus C H C H_{3}

C_{6} H_{5} \oplus C (C H_{3})_{2}

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