Which of the following molecules is tetrahedral?

The state of hybridization of the central atom is not the same as in the others.

$sp^3$ hybridisation is found in

Among $SO_2, NF_3, NH_3, XeF_2, ClF_3$ and $SF_4$,the hybridization of the molecule with non$-zero$ dipole moment and highest number of lone$-pairs$ of electrons on the central atom is

Describe the shapes of $BF_3$ and $BH_4^-$. Assign the hybridisation of boron in these species.

Total number of vacant orbitals in the valence shell of sulphur when it undergoes the formation of $SF_4$.