Q.
The most stable free radical among the following is
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Organic Chemistry – Some Basic Principles and Techniques
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Solution:
(a) Free radical stabilized only by electron releasing effect of −CH2 group.
(b) Free radical stabilized by resonance and electron releasing effect of −CH3 group.
(c) Free radical stabilized only by resonance.
(d) Free radical most stable. Stabilization by 2 methyl groups because of their e− releasing effects.