Chemistry - Complete d-block Question with Solution | TestHub

Cu has lowest melting point because it has lowest enthalpy of atomisation (i.e., heat required to break the metal lattice to get free atoms) among the elements. $\begin{array}{lllll}& \mathrm{Ni}>\mathrm{Fe}>\mathrm{Cr}>\mathrm{Cu}& & & \\ \text{ Enthalpy of atomisation : }& 430& 416& 397& 339\\ (\text{ in kJ mol }& & & & \end{array}$