Question:easy

The most common oxidation state observed for lanthanides in their compounds is:

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Consider the electron configuration lanthanides adopt on ionization.
Updated On: Jul 3, 2026
  • +1
  • +2
  • +3
  • +4
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The Correct Option is C

Solution and Explanation

+1 never observed. +2 only for Eu2+, Sm2+ (unstable in air). +4 only for Ce4+, Tb4+ (oxidizers). All 14 lanthanides form stable Ln3+.
\[\boxed{+3}\]
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