How does valence bond theory account for: `[Ni (Cl_4)]^(2-)` is diamagnetic and tetrahedral (At number of Ni = 28)

How does valence bond theory account for: [Ni (CO)_4]^-2 is diamagnetic tetrahedral (At number of Ni= 28)

How does valence bond theory account for : [Ni (CN_4)](2-) is diamagnetic and square planar.

[Ni(CN)_4]^(2-) is diamagnetic and has ............. shape.

Explain on the basis of valence bond theory that [Ni(CN)_4]^(2-) ion with square planar structure is diamagnetic and the [NiCl_4]^(2-) ion with tetrahedral geometry is paramagnetic.

For the complex [NiCl_4]^(2-) , write the hybridisation type. (Atomic no. of Ni = 28)

For the complex [NiCl_4]^(2-) , write the IUPAC name. (Atomic no. of Ni = 28)

Find the oxidation number of Ni [Ni(CN)_3 Cl]^(2-)

How would you account for the fact that [Ni(CO)_4] has tetrahedral geometry ?

Find the oxidation number of Ni in K_4[Ni(CN)_4 ]

Explain: [Ni (CN)_4]^(2-) is diamagnetic while [Ni(Cl)_4]^(2-) is paramagnetic.