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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
Elements which generally exhibit variable oxidation states and form colored ions are ___________.
  • A
    Metalloids.
  • B
    Transition elements.
  • C
    Non-metals.
  • D
    Gases.
✓

Answer

  1. Transition elements.

Explanation:

Transition elements have vacant d orbitals and the energy gap between d orbitals is very less. So transition elements exhibit variable oxidation state and form coloured ions as these elements emit radiations due to excitation of d electrons.

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