Q. Among the following sets of quantum numbers, which one is incorrect for $4d -$electron?
A) $4,\ 3,\ 2, + \frac{1}{2}$
B) $4,\ 2,\ 1, + \frac{1}{2}$
C) $4,\ 2, - 2, + \frac{1}{2}$
D) $4,\ 2,\ 1, - \frac{1}{2}$
Explanation
(a)
For $4d$ electron,
$n = 4,l = 2,m = - 2, - 1,0, + 1, + 2$
$s = + \frac{1}{2}\ or - \frac{1}{2}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.