Question

Transition metals are good catalysts because they have _____________.

• A. more surface area
• B. more valence electrons
• C. vacant d-orbitals
• D. all

Answer 1

Answer: (D)

all

Transition metals have vacant d-orbitals and because of this their valency is variable so they can be used as oxidising agent as well as reducing agent. also they have large surface area so they can act as a good catalyst.