Solution:
.Smaller the size of cation, the larger the size of the anion, greater is the covalent character of the ionic bond. The charge of Cation: Greater the charge of cation, greater is the covalent character of the ionic bond.
Among , the compounds with the greatest and the least ionic character respectively are
.Smaller the size of cation, the larger the size of the anion, greater is the covalent character of the ionic bond. The charge of Cation: Greater the charge of cation, greater is the covalent character of the ionic bond.