Chemistry - s Block Elements Question with Solution | TestHub

Ionic conductance in solution depends upon the mobility of ions, which depend upon the degree (or extent) of hydration. Since charge/radius ratio is maximum for$\mathrm{L}{\mathrm{i}}^{+}$, so it is hydrated to a maximum extent. Thus, the ionic size in aqueous solution, instead of increasing, actually decreases on moving from$\mathrm{L}{\mathrm{i}}^{+}$to$\mathrm{C}{\mathrm{s}}^{+}$.