Compare NaCl and CsCl with respect to ease of formation and also strength of ionic bond.

Explanation

Ionic compounds are formed easily between larger cation and smaller anion. This is because an atom whose atomic radius is large can form a cation easily and an atom that has a small atomic radius can form an anion easily. `Cs^(+)` ion can be formed more easily than `Na^(+)` ion. Formation of CsCl is easier than the formation of NaCl. Between NaCl and CsCl, as the anion is the same, that is, `Cl^(-)`, the sizes of the cations are compared. `Cs^(+)` has a larger ionic radius than `Na^(+)`. Thus, the strength of ionic bond is more in NaCl than CsCl.