Question

Which of the following types of metals form the most efficient catalysts.

• A. Alkali metals
• B. Alkaline earth metals
• C. Transition metals
• D. All of these

Answer 1

Answer: (C)

Transition metals

Answer 2

Sol Many of the -block (transition) elements and their compounds act as catalyst. Catalytic property is probably due to the utilisation of $( n - 1 ) d$ orbitals or formation of interstitial compounds.