Geometrical shape of the most stable complexes formed by the reaction of `Ni^(2+)` with `Cl^(-)`, `CN^(-)` and `H_(2)O` respectively are

Options

A. Octahedral, tetrahedral and square planar
B. Tetrahedral, square planar and octahedral
C. Square planar, tetrahedral and octahedral
D. Octahedral, square planar and octahderal

Answer

B

Explanation

`Ni^(2+), 4Cl^(-) to [Ni(Cl)_4]^(2-)` tetrahedral, `sp^3` - hybridization.
`Ni^(2+) + 4CN^(-) to [Ni(CN)_4]^(2-)`,squaręplanar, `dsp^2` hybridization.
`Ni^2 +6H_2O to [Ni(H_2O)_6]^(2+)` octahedral, `sp^3 d^2` hybridization.