Which hybridization is possible with $d$-orbitals? And which are not possible? Explain.

(N/A) The elements present in the third period contain $d$-orbitals in addition to $s$ and $p$ orbitals. The hybridization is possible between orbitals of comparable energy.
$(i)$ The energy of the $3d$ orbitals is comparable to the energy of the $3s$ and $3p$ orbitals. So,hybridization involving $3s$,$3p$,and $3d$ orbitals is possible.
$(ii)$ The energy of the $3d$ orbitals is comparable to the energy of the $4s$ and $4p$ orbitals. So,hybridization involving $3d$,$4s$,and $4p$ orbitals is possible.
Since the difference in energies of $3p$ and $4s$ orbitals is significant,no hybridization involving $3p$,$3d$,and $4s$ orbitals is possible.