What is the structure of $XeF_6$?

Fluorine forms chemical compounds with

Give the formula and describe the structure of a noble gas species which is isostructural with:
$(i)$ $ICl_{4}^{-}$
$(ii)$ $IBr_{2}^{-}$
$(iii)$ $BrO_{3}^{-}$

Identify the use of argon from the following.

Which of the following is an uncommon hydrolysis product of $XeF_{2}$ and $XeF_{4}$?

Identify the molecules having the same number of lone pairs on $Xe$ in the following molecules:
$(i) XeO_3$ $(ii) XeOF_4$ $(iii) XeF_6$