The sets of molecules in which the central atom has no lone pair of electrons are:
$i$. $SnCl_2, NH_3, SF_4$
$ii$. $HgCl_2, SO_3, SF_6$
$iii$. $BeCl_2, BF_3, PCl_5$
$iv$. $ClF_3, BrF_5, XeF_6$

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.

Which of the following is an incorrect match regarding the geometry of the molecules?

The $\angle FAsF$ bond angle in the $AsF_3Cl_2$ molecule is:

What is the correct order of bond angles (from smallest to largest) in $H_2S, NH_3, BF_3,$ and $SiH_4$?

In which of the following conversions does a planar compound change into a non-planar compound?
$(a)$ $ClF_3 \rightarrow ClF_4^{-}$
$(b)$ $NH_2^{-} \rightarrow NH_4^{+}$
$(c)$ $I_3^{+} \rightarrow I_3^{-}$
$(d)$ $SO_2 \rightarrow SO_3$