Q. The second electron affinity is zero for
A) Alkali metals
B) Halogens
C) Noble gases
D) Transition metal
Explanation
(b)
Halogens ($ns^{2}np^{5}$) after getting one electron occupy $ns^{2}np^{6}$ configuration, thus have $EA_{2}$ zero
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.