1)

The complex showing a spin-only magnetic moment of 2.82 B.M. is:


A) $Ni(CO)_{4}$

B) $[NiCl_{4}]^{2-}$

C) $Ni(PPh_{3})_{4}$

D) $[NiCN_{4}]^{2-}$

Answer:

Option B

Explanation:

$[NiCl_{4}]^{2-}$, O.S. of Ni = +2

Ni(28) = 3d8 4S2

 2042021599_z50q9z9ltblw-s.jpeg

No. of unpaired electrons = 2

Magnetic moment, μ = 2.82 B.M.