Q. The correct order of electron affinity is
A) $B < C < O > N$
B) $B > C > N > O$
C) $O > C > B > N$
D) $O < C < B < N$
Explanation
(a)
Electron affinity generally increases in a period from left to right because size decreases and nuclear charge increases. But the electron affinity of nitrogen is very low due to extra stability of half-filled 2p-orbital. Hence, the order of electron affinity is
$B < C < O > N$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.