Question

What would be magnetic moment of $G{d}^{+3}$ ($Z=64$)?

• A. 7.9 BM
• B. 3.62 BM
• C. 10.60 BM
• D. 9.72 BM

Answer 1

Answer: (A)

7.9 BM

Electronic configuration of $[Gd{]}^{3+}:[Xe]4f^7$

Hence number of unpaired electron $n=7$

Hence, $magneticmoment=\sqrt{n(n+2)}=\sqrt{63}=7.9BM$