Which free radical is most stable among following?

Which free radical is most stable among following?
  1. $\mathrm{R}-\dot{\mathrm{C}} \mathrm{H}_{2}$
  2. $\mathrm{R}_{3}-\stackrel{\circ}{\mathrm{C}}$
  3. $\dot{\mathrm{CH}}_{3}$
  4. $\mathrm{R}_{2}-\stackrel{\circ}{\mathrm{C}} \mathrm{H}$

Solution

Stability of radicals decreases in the order, $3^{\circ}>2^{\circ}>1^{\circ}>$ methyl.

Asked in: MHT CET 2020 (13 Oct Shift 2)

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