Question

Strong reducing & oxidizing agent among the following respectively.

• A. Ce+3 & Ce+4
• B. Eu+2 & Ce+4
• C. Ce+4 & Tb+4
• D. Ce+4 & Eu+2

Answer 1

Answer: (B)

Eu+2 & Ce+4

Answer 2

The correct answer is option (B): Eu+2 & Ce+4\

The most stable oxidation state of lanthanides is +3

$\therefore$ Eu+2 is a reducing agent and Ce+4 is an oxidizing agent.