Although Lithium has the highest ionization enthalpy among the alkali metals, it is paradoxically th — s Block Elements Chemistry Question

💡 Solution & Explanation

The reducing power in aqueous solution depends on the total enthalpy change (sublimation + ionization + hydration). Although $IE_1$ is high, the extremely small $Li^+$ ion possesses a massive negative hydration enthalpy that more than compensates for the high ionization energy, making $E^\circ$ highly negative.