Q. The ionization energy of ${Li}^{2 +}$ is equal to
A) $9hcR$
B) 6 $hcR$
C) 2 $hcR$
D) $hcR$
Explanation
(a) Ionization energy $= RchZ^{2}$
$\ \ \ \ \ \ \ \ \ \ \ Z = 3\ for\ {Li}^{2 +}$
$\therefore$ Ionization energy =(3)$^{2}$Rch = 9$Rch$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.