question_answer

Which one of the following is planar?

A)  \[Xe{{F}_{4}}\]                       

B)  \[Xe{{O}_{4}}\]

C)  \[Xe{{O}_{3}}F\]   

D)  \[Xe{{O}_{3}}{{F}_{2}}\]

Correct Answer: A

Solution :

Structure of \[Xe{{F}_{4}}\] as follows:

In involves \[s{{p}^{3}}{{d}^{2}}\] hybridisation in Xe atom. The molecule has square planar structure. Xe  and four F atoms are coplanar. The lone pairs present on axial positions, minimise electrons pair repulsion.