Question

In the reaction given below, 'M' is an alkali metal which reacts with oxygen and gives X. Select a suitable option pertaining to the nature of product X.
$\text{M}+{\text{O}}_2\to \text{X}$

• A. Acidic oxide
• B. Basic oxide
• C. Amphoteric oxide
• D. Neutral oxide

Answer 1

The correct option is B Basic oxide

Alkali metals on reaction with oxygen gas give rise to metallic oxides. These metallic oxides upon reaction with ${\text{H}}_2\text{O}$ form bases. Hence, metallic oxides are considered as basic oxides.