Which species do not have $sp^3$ hybridization?

The incorrect statement regarding the $BF_2NH_2$ molecule is:

Assertion : Among the carbon allotropes,diamond is an insulator,whereas,graphite is a good conductor of electricity.
Reason : Hybridization of carbon in diamond and graphite are $sp^3$ and $sp^2$,respectively.

On what factor does the direction of a bond around the central atom depend?

The hybridisation of xenon atom in $XeF_4$ is

The hybridization of atomic orbitals of nitrogen in $NO_2^+$,$NO_3^-$,and $NH_4^+$ are: