Q. Which one shows most pronounced inert pair effect?
A) $Si$
B) $Sn$
C) $Pb$
D) $C$
Explanation
(c)
The reluctance of the $s$-electrons of the valence shell to take part in bonding is called inert pair effect. It increases on moving down in a group. Hence, Pb shows most pronounced inert pair effect.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.