Question

The correct of stability of the free radical is
A. `CH-=overset(.)C gt C_(6)overset(.)H_(5) gt CH_(2)=overset(.)CH gt CH_(2)=CH-overset(.)CH_(2)`
B. `C_(6)overset(.)H_(5) gt CH -=overset(.)C gt CH_(2)=overset(.)CH gt CH_(2)=CH-overset(.)CH_(2)`
C. `C_(6)H_(5) gt CH_(2)=CH-overset(.)CH_(2) gt CH-=overset(.)overset(.)CgtCH_(2)=overset(.)CH`
D. `CH_(2)=CH-CH_(2) gt CH_(2)=CH gt C_(6)H_(5) gt -=C`

Answer 1

Correct Answer - D
The relative stability of a chemical species is inversely related to its potential energy. The potential energy. The potential energy is directly related to homolytic bonds dissociation energy:
`underset(KJ mol^(-1):356)(CH_(2)=CH)-CH_(2)-Hlt CH_(2)=CH-H ltoverset(452)underset(460)(C_(6)H_(5))-Hlt HC underset(523)-=C-H`