In the séries Sc(Z= 21) to Zn(Z=30), the erithalpy of atoritisation of zinc is the Iowest, ie '126 (~kJ)' mol-1. Why?

Explanation

Zinc bas the lowest enthalpy of atomisation becuuse of its electronic eonfigurtion of .3 (~d)^(10) 4 s^(2). atoms of zinc have weak interatomic internction hence weak boriding between atoms resulting in lower the enthalpy of atomisation. In all other metals of the 3 d series electrons from .3 (~d). orbitals are always involved in the formation of metallic bonds.