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 (Cl_4)]^(2-) is diamagnetic and tetrahedral (At number of Ni = 28)

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

The magnetic moment of [Ni(CO_4)] is

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.

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

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

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

Choose the correct alternative : The complex [Ni(CO)_4] is square planar / tetrahedral.

Explain the geometry of [Ni (CO)_4] on basis of VBT.

Write IUPAC name of the following : [Ni(CO)_4]