Among the elements of the 3d transition series, which element possesses the lowest enthalpy of atomi — d and f Block Elements Chemistry Question

💡 Solution & Explanation

Enthalpy of atomization depends on the strength of metallic bonding, which correlates with the number of unpaired $d$ -electrons. Zinc has a $d^{10}$ configuration (zero unpaired $d$ -electrons), resulting in extremely weak metallic bonding and the lowest $\Delta_a H^\circ$.