What is the hybridization and structure of $XeF_4$?

The state of hybridisation of $B$ in $BCl_3$ is

In which of the following molecules the central atom does not have $sp^3$ hybridization?

In $NO_2$ molecule,the $N$ atom undergoes which type of hybridization?

In which of the following sets of molecules,do the central atoms have the same hybridisation?

Among $[I_3]^{+}$,$[SiO_4]^{4-}$,$SO_2Cl_2$,$XeF_2$,$SF_4$,$ClF_3$,$Ni(CO)_4$,$XeO_2F_2$,$[PtCl_4]^{2-}$,$XeF_4$,and $SOCl_2$,the total number of species having $sp^3$ hybridised central atom is. . . . .