Monazite is a source of

Which of the following compounds of xenon does not exist?

Among the following molecules:
$(i)$ $XeO_3$
$(ii)$ $XeOF_4$
$(iii)$ $XeF_6$
Those having the same number of lone pairs on $Xe$ are:

$XeF_6$ on hydrolysis produces

The oxidation number of xenon in $XeOF_2$ is

$A$ xenon compound '$A$' upon partial hydrolysis gives $XeO_{2}F_{2}$. The number of lone pairs of electrons present in compound $A$ is ....... . (Round off to the nearest integer)