Chemistry - CHEMICAL BONDING Question with Solution | TestHub

The lower valencies are more ionic, because the radius of${\mathrm{M}}^{2+}$is greater than that of${\mathrm{M}}^{4+}$and according to Fajan's rules, the smaller the ions, the greater is the tendency to covalency.$\mathrm{P}\mathrm{b}\mathrm{C}{\mathrm{l}}_2$is more ionic than$\mathrm{S}\mathrm{n}\mathrm{C}{\mathrm{l}}_2$, because Pb has lower electronegativity than that of Sn.