Which of the following noble gases is radioactive in nature?

$Xe_{(g)} + 3F_{2(g)} \xrightarrow{573 \ K, 60-70 \ bar} XeF_{6(s)}$ ($1:20$ 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

Noble gases are a group of elements which exhibit very:

Match the compounds given in Column-$I$ with the shapes given in Column-$II$ and mark the correct option.

Column-$I$	Column-$II$
$(a) XeF_6$	$(i) \text{ Distorted Octahedral}$
$(b) XeO_3$	$(ii) \text{ Square planar}$
$(c) XeOF_4$	$(iii) \text{ Pyramidal}$
$(d) XeF_4$	$(iv) \text{ Square pyramidal}$

The noble gases can be separated by

$XeF_2$ reacts with $SbF_5$ to form