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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
The separation of Lanthanides by ion exchange method is based on:
  • A
    Asicity of the hydroxides.
  • B
    Size of the ions.
  • C
    The solubility of their nitrates.
  • D
    Oxidation state of the ion.
✓

Answer

  1. Size of the ions.

Explanation:

The separation of Lanthanoids by ion-exchange method is based on the size of the ions.

Separation can also be attained by size exclusion or gel permeation chromatography.

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