Which noble gas is most abundant in the atmosphere?

$Xe + F_2 \xrightarrow{573 \ K, 60.70 \ bar} A$
What is $A$?

Ionisation potential values of noble gases decrease down the group with increase in atomic size. Xenon forms binary fluorides by the direct reaction of elements. Identify the correct statement$(s)$ from below.

Select the correct matching.

List-$I$	List-$II$
$A$. $XeF_4$	$1$. Pyramidal
$B$. $XeF_6$	$2$. $T$-shape
$C$. $XeO_3$	$3$. Distorted octahedral
$D$. $XeOF_2$	$4$. Square planar

Why do noble gases have comparatively large atomic sizes?

The oxidation number of xenon in $XeOF_2$ is