Using the valence bond theory, deduce the shape and magnetic character of [Co(NH3)6]3+ ion.Atomic no. of Co=27

d²sp³ hybridisation, ammonia is a strong field ligand and forms an inner orbital complex. It is diamagnetic as there are no unpaired electrons.

Kindly refer to the following links:

https://www.meritnation.com/ask-answer/question/respectd-sir-mam-kindly-explain-co-nh3-6-3-have-octahedr/coordination-compounds/4308715

https://www.meritnation.com/ask-answer/question/explain-co-nh3-6-3-is-an-inner-orbital-complex-whereas/coordination-compounds/6303489