Consider the following compound (X):H-C equiv | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) The stability of carbon radicals depends on resonance and hyperconjugation.$1.$ Position $II$ forms a propargyl radical $(HC \equiv C-CH^{\bullet}

Vedclass · Accepted Answer

$II, I$

Vedclass · Answer

(D) The stability of carbon radicals depends on resonance and hyperconjugation.$1.$ Position $II$ forms a propargyl radical $(HC \equiv C-CH^{\bullet}-CH(CH_3)_2)$,which is resonance-stabilized by the adjacent triple bond.$2.$ Position $III$ forms a tertiary radical,which is stabilized by hyperconjugation.$3.$ Position $IV$ forms a primary radical,which is less stable than the tertiary radical.$4.$ Position $I$ forms an $sp$-hybridized radical $(C^{\bullet} \equiv C-CH_2-CH(CH_3)_2)$,which is highly unstable due to the high $s$-character of the $sp$ orbital.Comparing the stability: The resonance-stabilized radical at $II$ is the most stable,and the $sp$-hybridized radical at $I$ is the least stable.Therefore,the correct order is $II$ (most stable) and $I$ (least stable).

Consider the following compound $(X)$:
$H-C \equiv C-CH_2-CH(CH_3)-CH_3$
The most stable and least stable carbon radicals,respectively,produced by homolytic cleavage of the corresponding $C-H$ bond are:

Similar Questions

Due to the presence of an unpaired electron,free radicals are .........

Most stable carbocation is

Which of the following is the most stable carbocation?

Arrange the following carbocations in increasing order of stability:
$1. \, (CH_3)_2 - \overset{+}{C} - CH_2 - CH_3$
$2. \, (CH_3)_3 - \overset{+}{C}$
$3. \, (CH_3)_2 - \overset{+}{C} H$
$4. \, CH_3 - \overset{+}{C} H_2$
$5. \, \overset{+}{C} H_3$

The stability order of the following carbocations is:

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Consider the following compound $(X)$:$H-C \equiv C-CH_2-CH(CH_3)-CH_3$The most stable and least stable carbon radicals,respectively,produced by homolytic cleavage of the corresponding $C-H$ bond are: