Question
Which of the following two are isostructural?
A.
$$Xe{F_2},\,{\text{and}}\,IF_2^ - $$
B.
$$N{H_3},\,{\text{and}}\,B{F_3}$$
C.
$$CO_3^{2 - },\,{\text{and}}\,SO_3^{2 - }$$
D.
$$PC{l_5},\,{\text{and}}\,IC{l_5}$$
Answer :
$$Xe{F_2},\,{\text{and}}\,IF_2^ - $$
Solution :
Compounds having same structure and same hybridisation are known as isostructural species. e.g. $$Xe{F_2}$$ and $$IF_2^ - $$ are $$s{p^3}d$$ hybridised and both have linear shape.
$$F - {I^ - } - F\,\,\,\,\,\,\,\,F - Xe - F$$