Question

Which of the following species is most stable?
a) p-NO2C6H4-+CH2
b) C6H5-+CH2
c) p-Cl-C6H4-+CH2
d) H3CO-C6H4-+CH2

Answer 1

a)p-NO2C6H4-+CH2 IS MORE STABLE

Answer 2

I think option b is correct as there's no
- M effect
in a and b option there's - M effect