Question

Why is the hybridization of [Cr(H2O)6]3+ d2sp3 and not sp3d2?

Answer 1

they are incompatible! why? well obviously of it complete irevelants

Answer 2

A inner d orbital complex must be proposed.

Step-by-step explanation:

Hello,

It is seen that in this complex the total charge is +3 as long as the
`H_2O` is neutral. Therefore, its electron configuration is:

`1s^22s^22p^63s^23p^63d^3`

It means that it has three electrons on 3d sublevel zero on 4s and zero on 4p. Thus, the hybridization comes up from the fact we've got to complete the hollow spaces (six as there are six waters) into a whole "inner d orbital complex" that is:

`d^2sp^3`

Best regards.