Question

The correct order of ionization energy for carbon, nitrogen and oxygen atoms is:
(a) C > N > O
(b) C > N < O
(c) C < N > O
(d) C < N < O

Answer 1

The correct option is (c)

the reason is :

1. Carbon is larger in size than Nitrogen ,hence Less energy is required and nitrogen has more I.E.
2. Because nitrogen has half filled orbital hence more energy Is required to remove electron.

Hope it helps you