Question

Solve this:

12. In the lanthanoid series ( $Ce\to 58toLu\to 71$)

i) Which element's, compound acts as oxidising agent ?

ii) Which element show + 2 oxidation state (name any one) ?

iii) Which element has largest atomic radii ?

Answer 1

Dear Student,
1. CeO_​2 the oxide of Cerium used as oxidizing agent in catalytic oxidation,
2. Sm²⁺ Samarium is the element which shows +2 oxidation statete,other element which shows +2 oxidaion state -Eu²⁺,and Yb²⁺
3. Lanthanum has largest atomic radius 187 pm


Regards