$A$ gas $X$ is used in filling balloons for meteorological observations. It is also used in gas-cooled nuclear reactors. Here,the gas $X$ is

Identify the type of interaction between $Xe$ and water molecules in the clathrate compound of $Xe$ with water.

Which of the following is employed in flash tubes in photography?

In reaction $(1)$,$XeF_6$ undergoes complete hydrolysis to form $HF$ and $X$. In reaction $(2)$,$XeF_6$ undergoes partial hydrolysis to form $HF$,$Y$,and $Z$. The products $X, Y, Z$ respectively,are

Among the fluorides below,the one which does not exist 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 . . . . .