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The d & f Block Elements — Chemistry STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceChemistryThe d & f Block Elements1 Mark
MCQ
Catalytic activity of transition elements and their compounds is due to their _______.
  • A
    Small size.
  • B
    Vacant d-orbitals.
  • C
    Higher densities.
  • D
    Colour.
✓

Answer

  1. Vacant d-orbitals.

Explanation:

The catalytic activity of transition elements is ascribed to their ability to adopt multiple oxidation states and to form complexes.

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