Among the series elements, which element exhibits the lowest enthalpy of atomization and correspondi — d and f Block Elements Chemistry Question

💡 Solution & Explanation

The enthalpy of atomization and the melting point depend strongly on the number of unpaired $d$ -electrons available for metallic bonding. Zinc ($Zn$) has a fully filled $3d^{10}$ configuration with zero unpaired $d$ -electrons, resulting in extremely weak metallic bonding compared to other transition metals. Consequently, it has the lowest enthalpy of atomization and lowest melting point in the series.