JEE Main Chemistry question

The increasing order of stability of the free radicals (CH₃)₂ĊH, (CH₃)₃Ċ, (C₆H₅)₂ĊH, (C₆H₅)₃Ċ is

(A)(CH₃)₂ĊH < (CH₃)₃Ċ < (C₆H₅)₂ĊH < (C₆H₅)₃ĊCorrect
(B)(C₆H₅)₃Ċ < (C₆H₅)₂ĊH < (CH₃)₃Ċ < (CH₃)₂ĊH
(C)(C₆H₅)₂ĊH < (C₆H₅)₃Ċ < (CH₃)₃Ċ < (CH₃)₂ĊH
(D)(CH₃)₃Ċ < (CH₃)₂ĊH < (C₆H₅)₃Ċ < (C₆H₅)₂ĊH

Answer: (A)

Solution

Resonance delocalization into an aromatic ring stabilizes a radical far more than simple alkyl hyperconjugation, so the benzylic radicals outrank the alkyl radicals, and

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Question ID VK-139086