JEE MAIN - Chemistry (2024 - 29th January Evening Shift - No. 3)

Which of the following acts as a strong reducing agent? (Atomic number: $$\mathrm{Ce}=58, \mathrm{Eu}=63, \mathrm{Gd}=64, \mathrm{Lu}=71$$)

$$\mathrm{Eu}^{2+}$$

$$\mathrm{Gd}^{3+}$$

$$\mathrm{Lu}^{3+}$$

$$\mathrm{Ce}^{4+}$$

$\mathrm{Eu}^{2+}$ is a strong reducing agent changing to the common +3 state while all other are provided at their higher oxidation states.