Navigate

Which one of the alkali metals, forms only, the normal oxide, M₂O on heating

Which one of the alkali metals, forms only, the normal oxide, M₂O on heating in air

Options

(a) Rb
(b) K
(c) Li
(d) Na

Correct Answer:

Li

Explanation:

When alkali metals heated in atmosphere of oxygen, the alkali metals ignite and form oxides.On combustion, Li forms Li₂O; sodium gives the peroxide Na₂O₂ and potassium and rubidium gives superoxide(MO₂).

AIPMT2012
admin:

Related Questions

  1. In which of the following compounds manganese has oxidation number equal
  2. The number of moles of acidified KMnO₄ required to oxidise one mole
  3. If 900 J/g of heat is exchanged at boiling point of water, then what is increase
  4. The oxidation states of sulphur in the anions : SO₃²⁻,S₂O₄²⁻ and S₂O₆²⁻
  5. Which one of the following is an example of heterogenous catalysis