Question

Dimethyl glyoxime forms a square planar complex with $N{i}^{2+}$. This complex should be :

• A. Diamagnetic
• B. Paramagnetic having $1$ unpaired electron
• C. Paramagnetic having $2$ unpaired electrons
• D. Ferromagnetic

Answer 1

Answer: (A)

Diamagnetic

A square planar complex is obtained due to $ds{p}^2$ hybridization.
$N{i}^{2+}$ has outer electronic configuration of $3d^8$.
These 8 electrons occupy four 3d orbitals and are all paired.
Thus the $\left[Ni\right(DMG{)}_2]$ complex is diamagnetic.