Question

The magnitude of the magnetic moment (spin only) of $[NiC{l}_4{]}^{2-}$ will be?

• A. 2.82 B.M.
• B. 3.25B.M.
• C. 1.23 B.M.
• D. 5.64 B.M.

Answer 1

The correct option is A 2.82 B.M.

$[NiC{l}_4{]}^{2-}\Rightarrow N{i}^{2+}\Rightarrow [Ar]3d^8$

$\Rightarrow C{l}^{-}\Rightarrow$ Weak filed ligands.

$\Rightarrow$ Magnetic moment $=\sqrt{n(n+2)}$

$\sqrt{2\times 4}=\sqrt{8}=2.82BM$