JEE Main 2021 (3 Aug, Shift 2) Chemistry Q39: Which one of…

Question

Which one of the following statements is correct?

Accepted Answer

Option 3: $\mathrm{Ce^{4+}}$ is an oxidant and $\mathrm{Eu^{2+}}$ is a reducing agent.

Answer

$\mathrm{Ce^{4+}}$ is more stable than $\mathrm{Ce^{3+}}$ due to $4f^0$ configuration.

Answer

$\mathrm{Eu^{2+}}$ is more stable than $\mathrm{Eu^{3+}}$ due to $4f^7$ configuration.

Answer

$\mathrm{Ce^{4+}}$ is an oxidant and $\mathrm{Eu^{2+}}$ is a reducing agent.

Answer

$\mathrm{Ce^{3+}}$ and $\mathrm{La^{3+}}$ salts are colored and paramagnetic.

JEE Main 3 August 2021, Shift 2, Chemistry Q39