Using valence bond theory, predict the geometry and magnetic behaviour of `[Cr(NH_3)_6]^(+)` ion.

Using valence bond theory predict the geometry and magnetic behaviour of [Pt(CN)_4]^(2-) .

Using the valence bond theory, predict the shape and magnetic behaviour of [Cr(NH_3)_5Cl]^(2+) ion.

Using the valence bond theory, predict the geometry and magnetic behaviour of [CoF_(6)]^(3-) . (Atomic number of Co = 27)

By using valence bond theory discuss the geometry aud magnetic nature of [Cr(NH_3)_6]^(3+) ion.

[Cr(NH_3)_6]^(3+) ion is:

Using valence bond theory account for the geometry and magnetic nature of [NiCl_(4)]^(2-) ion. ("Atomic number of Ni "= 28) .