Q. Which one of the following has maximum ionisation potential?
A) K
B) Be
C) Na
D) Mg
Explanation
(b)
The ionisation potential increases in a period on moving left to right while in a group it is decreases on moving from top to bottom. Hence, Be has maximum ionisation potential.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.