Question

With the help of Valence Bond Theory(VBT), explain hybridisation, geometry and magnetic property of $[NiC{l}_4{]}^{2-}$.

Answer 1

The central metal ion present in this complex is $N{i}^{2+}$. Atomic number of Nickel is $28$. Electronic configuration is $Ni$ is $\left[Ar\right]3d^{8}4S^2$. Electronic configuration is $N{i}^{+2}$ is $\left[Ar\right]3d^{8}4S^0$. Nickel is $s{p}^3$ hybridised which results in tetrahedral geometry. Two unpaired electrons are present. Hence, the complex ion is paramagnetic.