Question

The increasing order of stability of the following free radicals is:
A. `(CH_(3))_(2)dotCHlt(CH_(3))_(3)dotClt(C_(6)H_(5))_(3)dotClt(C_(6)H_(5))_(2)dotCH`
B. `(C_(6)H_(5))_(2)dotCHlt(C_(6)H_(5))_(3)dotClt(CH_(3))_(3)dotClt(CH_(3))_(2)dotCH`
C. `(C_(6)H_(5))_(3)dotClt(C_(6)H_(5))_(2)dotCHlt(CH_(3))_(3)dotClt(CH_(3))_(2)dotCH`
D. `(CH_(3))_(2)dotCHlt(CH_(3))_(3)dotC(C_(6)H_(5))_(2)dotCHlt(C_(6)H_(5))_(3)dotC`

Answer 1

Correct Answer - D
Larger the number of phenyl groups linked to a free radical. More the number of resonating structure and greater is the stability of free radical thus the correct order for the stability a free radicals is
`(CH_(3))_(2)dotCH lt (CH_(3))_(3)dotC lt (C_(6)H_(5))_(2)dotCH(C_(6)H_(5))_(3)dotC`