Q. The correct order of increasing electron affinity of halogens is
A) $F < Cl < Br < I$
B) $I < Br < F < Cl$
C) $I > Br > Cl > F$
D) $Br > I > F > Cl$
Explanation
(b)
The value of electron affinity decreases with increase in size of atom, because the nuclear attraction decreases as the atomic number increases. Fluorine due to its very small size has lower electron affinity than chlorine. Hence, the increasing order of electron affinity of halogen is
$I < Br < F < Cl$.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.