Question

The magnetic moment of $N{i}^{2+}$ ion (At. No. of Ni. is 28) in BM unit is

• A. 1.73
• B. 4.81
• C. 5.96
• D. 2.84
• E. 3.86

Answer 1

Answer: (D)

The number of unpaired electrons in $N{i}^{2+}(aq)=2$ Water is weak ligand hence no pairing will take place spin magnetic moment $=\sqrt{n(n+2)}=\sqrt{2(2+2)}=\sqrt{8}=2.82$