Among the following which set of molecular/ionic species all have a planar structure?

Concept:

• The molecular structure of a molecule is the arrangement of surrounding atoms around the central atom.
• The molecular structure can be easily predicted by calculating the steric number of the molecule which is the total number of bond and lone pairs.
• Each steric number belongs to particular hybridization which further helps in  structure of molecule.

Explanation:

Structure of given molecular ions/species:

1. BrF₃

Steric number = 5

hybridization = sp³d (trigonal bipyramidal)

structure = T-shaped

2. FClO₂

steric number = 4

Hybridization = sp³

Structure = Trigonal pyramidal

3.  [XeF5]^-

steric number = 5

hybridization = sp³d³

Shape = Pentagonal planer

4. [ClF4]^-

steric number = 6

Hybridization = sp³d²

Structure = square planar

5. XeO₃

steric number = 4

hybridization = sp3

structure = trigonal pyramidal

Among given molecular species, [ClF4]-,  and [XeF5]^- have planar structure/shape. 

Conclusion:

Hence, the following set of ionic species will have planar geometry [ClF4]-,and [XeF5]^-