4.19 Arrange the bonds in order of increasing ionic character in the molecules: LiF, KO, N, SO and ClF.
The ionic character in a molecule is dependent upon the electronegativity difference between the constituting atoms. The greater the difference, the greater will be the ionic character of the molecule. On this basis, the order of increasing ionic character in the given molecules is N < SO < ClF < KO < LiF.
