Transition metals are exceptionally effective solid catalysts in various chemical reactions. Accordi — d and f Block Elements Chemistry Question

💡 Solution & Explanation

Transition metals are superb catalysts due to two primary reasons: (1) They exhibit variable oxidation states, allowing them to readily transfer electrons and form unstable intermediate complexes with reactants, thereby providing an alternative reaction pathway with lower activation energy. (2) In their solid state, they provide a large surface area equipped with vacant $d$ -orbitals where reactant gas molecules can adsorb, weakening the bonds within the reactant molecules and increasing collision frequency.