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Geometrical shapes of the complexes formed by the reaction of `Ni^(2+)` with `Cl^-, CN^-` and `H_2O`, respectively, are
A. |
octahedral tetrahedral and square planar |
B. |
tetrahedral, square planar and octahedral |
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C. |
square planar, tetrahedral and octahedral |
D. |
octahedral, square planar and octahedral |
`CN^-` is a strong ligand