$CO_2$ is isostructural with

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

Match List-$I$ with List-$II$:

List-$I$ (Molecule)	List-$II$ (Shape)
$A$. $BrF_5$	$I$. $T$-shape
$B$. $H_2O$	$II$. See-saw
$C$. $ClF_3$	$III$. Bent
$D$. $SF_4$	$IV$. Square pyramidal

The geometry of $XeOF_4$ is

In $SOCl_{2}$,the $Cl-S-Cl$ and $Cl-S-O$ bond angles are

$X$ and $Y$ are two covalent molecules in which the hybridization of the central atoms is the same,but the shapes are different. What are $X$ and $Y$?