Question

Identify the formula of lanthanoid oxide formed when lanthanoid (Ln) is burnt in oxygen.

विकल्प

• Ln₂O₃

• LnO₂

• Ln₂O

• LnO

Answer 1

Ln₂O₃

Explanation:

∵ Ln forms Ln³⁺ ions; they form Ln₂O₃ when it is burnt in oxygen.

\[\ce{4Ln + 3O2 -> 2Ln2O3}\]