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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
Which element among the Lanthanides has the smallest atomic radius?
  • A
    Cerium.
  • B
    Lutetium.
  • C
    Europium.
  • D
    Gadolinium.
✓

Answer

  1. Lutetium.

Explanation:

Lutetium is the last element of the Lanthanides, so it will have the smallest ionic radius due to Lanthanide contraction.

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