Q. The correct order of ionisation energy for comparing carbon, nitrogen and oxygen atom is
A) $C > N > O$
B) $C > N < O$
C) $C < N > O$
D) $C < N < O$
Explanation
(c)
$C < N > O$ is the correct order because N has stable configuration (exactly half-filled $p$-orbital $1s^{2},2s^{2},2p^{3}$).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.