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

Given below are two statements: one is labelled as Assertion $A$ and the other is labelled as Reason $R$ :
Assertion $A$ : The $H-O-H$ bond angle in water molecule is $104.5^{\circ}$.
Reason $R$ : The lone pair $-$ lone pair repulsion of electrons is higher than the bond pair $-$ bond pair repulsion.

In which of the following species is the central atom not surrounded by exactly $8$ valence electrons?

What is the bond angle $O-S-O$ in the $SO_2$ molecule (in $^{\circ}$)?

Identify a pair of molecules having similar shapes of both members.

The correct order of bond angle is: