# Give the formula and describe the structure of a noble gas species which is isostructural with:

Question:

Give the formula and describe the structure of a noble gas species which is isostructural with:

(i) $\mathrm{ICl}_{4}^{-}$

(ii) $\mathrm{IBr}_{2}^{-}$

(iii) $\mathrm{BrO}_{3}^{-}$

Solution:

(i) $\mathrm{XeF}_{4}$ is isoelectronic with $\mathrm{ICl}_{4}^{-}$and has square planar geometry.

(ii) XeF2 is isoelectronic to  and has a linear structure.

(iii) XeO3 is isostructural to and has a pyramidal molecular structure.