MCQ
Catalytic activity of transition elements and their compounds is due to their $.......$
  • A
    Small size.
  • Vacant $d-$orbitals.
  • C
    Higher densities.
  • D
    Colour.

Answer

Correct option: B.
Vacant $d-$orbitals.
The catalytic activity of transition elements is ascribed to their ability to adopt multiple oxidation states and to form complexes.

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