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NEETChemistryd and f Block Elements

Although +3 oxidation state is the characteristic oxidation state of lanthanoids, cerium shows +4 oxidation state also. Why?

Options

  1. ACerium has a smaller atomic size than other lanthanoids.
  2. BCerium has a more stable electronic configuration in the +4 oxidation state.
  3. CCerium has a lower ionization energy than other lanthanoids.
  4. DCerium has a larger number of unpaired electrons.

Correct answer

B. Cerium has a more stable electronic configuration in the +4 oxidation state.

Step-by-step solution

Correct Option is : (B) Cerium has a more stable electronic configuration in the +4 oxidation state.

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