JEE Main 2022 · 25 Jun · Shift 1 · Chemistry Q68

ChemistrySingle correct+4 / -1Question 68 of 90

Cerium (IV) has a noble gas configuration. Which of the following is correct statement about it ?

It will not prefer to undergo redox reactions.

It will prefer to gain electron and act as an oxidizing agent

It will prefer to give away an electron and behave as reducing agent

It acts as both, oxidizing and reducing agent.

Answer and worked solution

Official answer: B

Ce(IV). Cerium's common state is +3; $\mathrm{Ce^{4+}}$ readily gains an electron, so it is a strong oxidising agent ( $E^\circ\approx1.74$ V).

(B)

Topics:Lanthanoids

JEE Main 2022 · 25 Jun · Shift 1, Chemistry question 68