Q. Gradual addition of electronic shells in the noble gases causes a decrease in their
A) Ionisation energy
B) Density
C) Boiling point
D) Atomic radius
Explanation
(a)
As the number of shells increases, size increases and the effective nuclear charge on the outermost electron decreases. Thus, $IE$ decreases
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.