The last member of inert gas elements is

Which of the following compounds are formed by Xenon?

$Xe_{(g)} + 2 F_{2(g)} \xrightarrow[7 \text{ bar }]{873 \text{ K}} XeF_{4(s)}$
The ratio of $Xe : F_2$ required in the above reaction is

At $143 \ K$,the reaction of $XeF_4$ with $O_2F_2$ produces a xenon compound $Y$. The total number of lone pair$(s)$ of electrons present on the whole molecule of $Y$ is . . . . .

The melting and boiling points of noble gases are ...

In noble gases,the addition of successive electronic shells leads to a decrease in their ........ .