Which of the following statement(s) is (are) correct?

Options

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

Answer

A, B, D

Explanation

Paramagnetic and diamagnetic respectively
(b) Tetrahedral and square planar respectively.
c) Same primary valency (4) in both
d) sp and dsp respectively