The most abundant noble gas in the atmosphere is

Which one of the following reactions of xenon compounds is not feasible?

The density of nitrogen prepared from air is slightly higher than that of nitrogen prepared from chemical compounds. This is due to the presence of which of the following in nitrogen obtained from air?

The number of $p \pi-d \pi$ 'pi' bonds present in $XeO_3$ and $XeO_4$ molecules,respectively,are

Which elements were discovered by the scientists Ramsay and Glenn $T$. Seaborg?

Match the compounds of $Xe$ in Column-$I$ with the molecular structure in Column-$II$.

Column-$I$	Column-$II$
$(a)$ $XeF_2$	$(i)$ Square planar
$(b)$ $XeF_4$	$(ii)$ Linear
$(c)$ $XeO_3$	$(iii)$ Square pyramidal
$(d)$ $XeOF_4$	$(iv)$ Pyramidal