QJEEM23Cha92d: JEE Main 2023 Chemistry - Class 12 JEEM23Cha92d Solution: Strong reducing and oxidizing agents among the following,…

Strong reducing agents are those that readily donate electrons, and strong oxidizing agents are those that readily accept electrons.

• $\mathrm{Ce}^{4+}$ : It can accept an electron to form $\mathrm{Ce}^{3+}$ , so it is a strong oxidizing agent.


• $\mathrm{Eu}^{2+}$ : It can donate an electron to form $\mathrm{Eu}^{3+}$ , so it is a strong reducing agent.

So the correct answer is: $\mathrm{Eu}^{2+}$ and $\mathrm{Ce}^{4+}$ .