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

(N/A) $(i)$ $XeF_{4}$ is isostructural with $ICl_{4}^{-}$ and has a square planar geometry.
$(ii)$ $XeF_{2}$ is isostructural with $IBr_{2}^{-}$ and has a linear structure.
$(iii)$ $XeO_{3}$ is isostructural with $BrO_{3}^{-}$ and has a pyramidal molecular structure.