Question

Ce⁴⁺ act as :

(1) strong oxidising agent

(2) strong reducing agent

(3) not show redox

(4) act as oxidising and reducing agent.

Answer 1

Correct option is (1) strong oxidising agent

Formation of Ce^IV is favoured by it's noble gas configuration but it is strong oxidant reverting to the +3 state. The E^o value for Ce⁴⁺/Ce³⁺ is \(E^{\underline o} _{Ce^{4+}} / E^o_{Ce^{s+}}\) = 1.74 V is favourable for its oxidising nature.