NTA Abhyas NEET2020ChemistryChemical Bonding and Molecular StructurePractice
Which of the following is not an ionic halide?
Options
- AU F 4
- BP b C l 2
- CS n C l 2
- DU F 6
Correct answer
D. U F 6
Step-by-step solution
U F 6 has essentially covalent character. This is because small highly charged cations polarise the anions more effectively. For a metal with variable oxidation states, the halide with higher oxidation state of metal will be more covalent than the halide with lower oxidation of the metal. For example, P b C l 4 , S n C l 4 and U F 6 are more covalent in nature than P b C l 2 , S n C l 2 and U F 4 respectively.