Which radical is more stable in terms of bond-dissociation energy? Rationalize the difference in stability based on their structures.

• A. Radical (i) is more stable than (ii) due to the presence of a delocalized free radical via the inductive effect in (ii).
• B. Radical (ii) is more stable than (i) due to the presence of a delocalized free radical via the resonance effect in (ii).
• C. Radical (i) is more stable than (ii) due to the presence of alkyl groups that donate electrons via the hyperconjugation effect in (ii).
• D. Radical (ii) is more stable than (i) due to the presence of alkyl groups that donate electrons via the electronegative effect in (i).

Answer: (B)