Consider the following compound (X) The most stable and least stable carbon radicals, respectively, produced by homolytic

Question

Consider the following compound (X)

\(H- \overset{I}{C} \equiv C - \underset{\underset{(X)}{}}{ \overset{II}{CH_2}} - \overset{III}{\underset{CH_3}{\underset{|}CH}} - \overset{IV}{CH_3}\)

The most stable and least stable carbon radicals, respectively, produced by homolytic cleavage of corresponding C - H bond are

(1) II, IV

(2) III, II

(3) II, I 

(4) I, IV

Answer 1

Correct option is: (3) II, I 

Most stable: II (due to resonance)

Least stable: I (due to electron deficient sp hybrid C-atom)