In which of the following is the angle between the two covalent bonds greatest?

Which of the following statements are true or false?
$(A)$ All the bond angles $\angle Cl-P-Cl$ are $90^{\circ}$ in $PCl_5$.
$(B)$ The bond length of $P-Cl$ in the axial position is more than the equatorial position in $PCl_5$.
$(C)$ $PCl_5$ is a nonreactive molecule.
$(D)$ In $PCl_5$,the hybridization is $sp^3d$ and it has a pyramidal structure.

What is the formal charge on the sulphur atom in a sulphuric acid $(H_2SO_4)$ molecule?

The molecular shapes of $SF_4, CF_4$,and $XeF_4$ are:

The bond angle in $NF_{3}$ $(102.3^{\circ})$ is smaller than $NH_{3}$ $(107.2^{\circ})$. This is because of

Which of the following shapes is not possible for any possible value of $n$ in the $XeF_n$ molecule?