One of the factor that determines the stability of radicals is hyper conjugation. (CH3)3C˙ show the maximum hyperconjugation.
Homolytic fission of the following alkanes forms free radicals CH3−CH3, CH3−CH2−CH3,(CH3)2CH−CH3, CH3−CH2−CH(CH3)2. Increasing orders of stability of the radicals is:
Held on 30 Apr 2013 · Verified 9 Jul 2026.
(CH3)2C−CH2CH3<CH3−CH−CH3<CH3−CH2<(CH3)3C
CH3−CH2<CH3−CH−CH3<(CH3)2C−CH2−CH3(CH3)3C
CH3−CH2<CH3−C˙H−CH3<(CH3)3C˙<(CH3)2C−CH2CH3
(CH3)3C˙<(CH3)2C˙−CH2CH3<CH3−CH−CH3<CH3−C˙H2
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