Chemistry - CHEMICAL BONDING Question with Solution | TestHub

According to Fajan's rule, as the size of anion increases, covalent character also increases and ionic nature decreases so the correct order is
$\mathrm{P}\mathrm{b}{\mathrm{F}}_2\left(\mathrm{I}\mathrm{I}\right)>\mathrm{P}\mathrm{b}\mathrm{C}{\mathrm{l}}_2\left(\mathrm{I}\right)>\mathrm{P}\mathrm{b}\mathrm{B}{\mathrm{r}}_2\left(\mathrm{I}\mathrm{V}\right)>\mathrm{P}\mathrm{b}{\mathrm{I}}_2\left(\mathrm{I}\mathrm{I}\mathrm{I}\right)$