Question

Transition metals make the most efficient catalysts because of their ability to:

• A. adopt multiple oxidation states and to form complexes
• B. form coloured ions
• C. show paramagnetism due to unpaired electrons
• D. form a large number of oxides

Answer 1

The correct option is A adopt multiple oxidation states and to form complexes

Transition metals have partially filled d- orbitals so they can easily withdraw the electrons from the reagents or give electrons to them depending on the nature of the reaction. They also have a tendency to show large no. of oxidation states and the ability to form complexes which makes them a good catalyst.