Arrange the bonds in order of increasing ionic character in the molecules: LiF, , and .

Solution:

The difference in electronegativity between constituent atoms determines the ionic character of a molecule. As a result, the greater the difference, the greater the ionic character of a molecule.

As a result, the required ionic character order of the given molecules is

N₂< SO₂< ClF₃< K₂O <LiF.