Why is benzylic free radical more stable than allylic free radical?

CBSE Class 11 CBSE Class 11 Chemistry
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1

This is due to more resonance of benzylic free radical.

While allylic free radical has only two resonating structures soit has less delocalization.

2

However, you are ignoring the fact that , allylic free radical too, can show 4 rsonating structures, because of hyperconjugation , AND , thermodynamically, too, ALLYL FREE RADICAL is MORE STABLE by 2kcal/mol .

3

This is due to the fact that Benzylic free radical has more no. of canonical structures as compared to Allylic free radical