Explain how two complexes of nickel, `[Ni(CN)_4]^(2-)` and `Ni(CO)_4` have different structures but do not differ in magnetic behaviour.

Explanation

The complex `[Ni(CN)_(4)]^(2-)` and `[Ni(CO)_(4)]` is square planar while `[Ni(CO)_(4)]` is tetrahedral in nature. The differnence in nature. The difference arises because of the oxidation states of the metal atom/ion in the two complexes. But since all the electron orbitals of hte central metal atom/ion in these complexes are paired, both are therefore, diamagnetic in nature.