Question

Write the hybridization and shape of [CoF6] 3- and [Ni(CN)4] 2-

Answer 1

for first compound hybridisation is SP3D2 AND SHAPE IS OCTA HYDRAL  AND for second compound hybridisation is sp2d and shape is square planar.

Answer 2

The structure of [CoF6] is octahedral because the d orbital of the Co has 5 unhybridize electron and and the F is weak ligand due to which the inner d orbital can't take part in bond formation due to which they can form outer orbital complex which hybridization is sp3d2 and the structure will be cathedral