Q. Which ionisation potential (IP) in the following equations involves the greatest amount of energy?

A) $K^{+} \rightarrow K^{2 +} + e^{-}$
B) $Na \rightarrow Na^{+} + e^{-}$
C) $C^{2 +} \rightarrow C^{3 +} + e^{-}$
D) $Ca^{+} \rightarrow Ca^{2 +} + e^{-}$
Explanation

(a)
$K^{+} \rightarrow K^{2 +} + e^{-}$. Since, $e^{-}$ is to be removed from stable configuration

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.