Which of the following noble gases is lighter than air?

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

Which one of the following noble gases is the least polarizable?

What are the products formed in the reaction of $XeF_6$ with $SiO_2$?

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.

$Xe$ has maximum electronegativity $(EN)$ in which of the following compounds?