Which of the following statements is not correct?

Options

A. The complexes `[NiCl_(4)]^(2-) and [Ni(CN)_(4)]^(2-)` differ in the state of hybridization of nickel
B. The complexes `[NiCl_(4)]^(2-) and [Ni(CN)_(4)]^(2-)` differ in the magnetic properties
C. The complexes `[NiCl_(4)]^(2-) and [Ni(CN)_(4)]^(2-)` differ in geometry
D. The complexes `[NiCl_(4)]^(2-) and [Ni(CN)_(4)]^(2-)` differ in primary valencies of nickel

Answer

D

Explanation

The primary valencies of Ni, in the complexes `[Ni(Cl_(4))]^(2-) and [Ni(CN_(4))]^(2-)` is same, i.e., `(+II)`. Primary valencies are those valencies in which a metal exhibits in the formation of its simple salt, these are non directional, It is also referred as oxidation state of central metal atom.