Transition metals exhibit high enthalpies of atomization.

Explanation : This is because the atoms in these elements are closely packed and held together by strong metallic bonds. The metallic bond is formed as a result of the interaction of electrons in the outermost shell. Greater the number of valence electrons, stronger is the metallic bond.

Solved example 1: Which one of the following characteristics of the transition metals is associated with their catalytic activity

(a) Variable oxidation states

(b) High enthalpy of atomization

(c) Paramagnetic behaviour

(d) Colour of hydrated ions

Ans: a