Question

Explain why Ce2+ act as oxidizing agent whereas Eu2+ act as reducing agent

Answer 1

Answer:

Cerium has only 4 electrons and has no valence electrons are left. Hence, it can only gain electrons and not loose extra electrons and act as oxidizing agent. Europium has 9 valence electrons and has 7 electrons left. Hence, it can easily loose more electrons and can act as reducing agent.