Question

The catalytic activity of transition elements and their compounds is described by:

• A. Their chemical reactivity
• B. Their magnetic behaviour
• C. Their unfilled d-orbitals
• D. Their ability to exhibit multiple oxidation states

Answer 1

The correct option is D Their ability to exhibit multiple oxidation states

In transition metals, both (n-1)d and ns electrons take part in bonding, so it can show multiple oxidation states. This is the main reason for the catalytic properties exhibited by them and their compounds.