Q. Which one of the following elements has the highest ionisation energy?
A) $\lbrack Ne\rbrack 3s^{2}3p^{1}$
B) $\lbrack Ne\rbrack 3s^{2}3p^{3}$
C) $\lbrack Ne\rbrack 3s^{2}3p^{2}$
D) $\lbrack Ar\rbrack\ 3d^{10},\ 4s^{2}4p^{2}$
Explanation
(b)
Since, $e^{-}$ is to be removed from exactly half-filled $p$-orbital
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.