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Transition and Inner Transition Elements — Chemistry STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceChemistryTransition and Inner Transition Elements2 Marks
Question
Describe the important properties of actinoids.
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Answer

Properties of actinoids :
  • Actinoids are silvery white ( similar to lanthanoids).
  • They are highly reactive radioactive elements.
  • Most of these elements are not found in nature. They are radioactive and man made.
  • They experience decrease in the atomic and ionic radii from Ac to Lw, known as actinoid contraction.
  • The common oxidation state is +3. Elements of the first half of the series exhibit higher oxidation states.

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