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

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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).

Related Questions:

1. Which one of the following statements about transition elements is incorrect
2. When two atoms of chlorine combine to form one molecule of chlorine gas
3. Which of the following is not true
4. The temperature, at which heavy water has maximum density is
5. On heating sodium metal in dry ammonia, the compound formed is

Topics: S and Some P Block Elements (157)
Subject: Chemistry (2512)

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