Which of the following set of ions act as oxidising agents?

Which of the following set of ions act as oxidising agents?
  1. $\mathrm{Ce}^{4+}$ and $\mathrm{Tb}^{4+}$
  2. $\mathrm{La}^{3+}$ and $\mathrm{Lu}^{3+}$
  3. $\mathrm{Eu}^{2+}$ and $\mathrm{Yb}^{2+}$
  4. $\mathrm{Eu}^{2+}$ and $\mathrm{Tb}^{4+}$

Solution

Most stable oxidation state of lanthanoids is +3 $\mathrm{Ce}^{4+}$ and $\mathrm{Tb}^{4+}$ will get reduced easily and will be good oxidising agents.

Asked in: NEET 2024 (Re-NEET)

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