$XeF_4$ on partial hydrolysis produces

Write the preparation of,or discuss the properties of:
$(i)$ Xenon-Fluorine compounds
$(ii)$ Xenon-Oxygen compounds

Hydrolysis of $XeF_4$ gives $HF$,$O_2$,$Xe$ and '$X$'. The structure of '$X$' is

Which of the following compounds does not exhibit the maximum oxidation state?

Which one of the following statements regarding helium is incorrect?

Why does the following reaction occur?
$XeO_{6(aq)}^{4-} + 2F_{(aq)}^{-} + 6H_{(aq)}^{+} \to XeO_{3(g)} + F_{2(g)} + 3H_2O_{(l)}$
What conclusion about the compound $Na_4XeO_6$ (of which $XeO_6^{4-}$ is a part) can be drawn from the reaction?