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

Options

A. The complexes `[NiCl_(4)]^(2-) and [NiCN_(4)]^(2-)` differ in the magnetic properrties
B. The complexes `[NiCl_(4)]^(2-) and [NiCN)_(4)]^(2-)` differ in the geometry
C. The complexes `[NiCl_(4)]^(2-) and [NiCN_(4)]^(2-)` differ in primarry valancies of nickel
D. The complexes `[NiCl_(4)]^(2-) and [NiCN_(4)]^(2-)` differ in the state of hybridization of nickel

Answer

A, B, D