Question

Magnetic moment (in $BM$ ) of $C{u}^{2+}$ ion is

• A. 1.73
• B. 5.92
• C. Zero
• D. 4.89

Answer 1

Answer: (A)

$C{u}^{2+}\to 3d^9$
It has one unpaired electron
Hence $\mu =\sqrt{n(n+2)}$ B.M
$\mu =\sqrt{3}B\cdot M=1.732$ B.M