What is the atomic state of noble gases?

$Xe_{(g)} + 3F_{2(g)} \xrightarrow{573 \ K, 60-70 \ bar} XeF_{6(s)}$ ($1:20$ molar ratio).
$XeF_6 + H_2O \rightarrow XeOF_4 + 2HF$ $(Y)$
$XeF_6 + 3H_2O \rightarrow XeO_3 + 6HF$ $(Z)$
The correct statements regarding $Y$ and $Z$ are:
$I$. $Y$ has square pyramidal geometry
$II$. $Y$ has linear geometry
$III$. $Z$ has $3 \sigma, 3 \pi$ bonds and $1$ lone pair of electrons on the central atom
$IV$. $Z$ has tetrahedral geometry

The electronic configuration of the outermost shell of inert gases is:

Which of the following statements is $NOT$ true for noble gases?

The oxidation state of $Xe$ in $XeO_3$ and the bond angle in it respectively are:

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