To prepare $XeF_6$,$Xe$ and $F_2$ are mixed at $573 \ K$ and $60-70 \ bar$ in the ratio of

The colored discharge tubes used for advertising mainly contain .........

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

$XeF_6$ on partial hydrolysis with water produces a compound '$X$'. The same compound '$X$' is formed when $XeF_6$ reacts with silica. The compound '$X$' is

Which of the following statements is correct?

Percentage of $Ar$ in air is about (in $\%$)