Q. The magnetic moment of ${Cu}^{2 +}$ ion is
A) 2.73
B) Zero
C) 1.93
D) 1.73
Explanation
(d)
The electronic configurations of ${Cu}^{2 +}$ is
${Cu}^{2 +}$:[Ar] 3$d^{9}$
Hence, it has one unpaired electron.
Magnetic moment($\mu)$=$\sqrt{n(n + 2)}$
$\sqrt{1(1 + 2)}$
=1.73
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.