Question

Metals, except Al and Zn, react with oxygen to form _______ oxides.

• A. acidic
• B. basic
• C. amphoteric
• D. neutral

Answer 1

The correct option is B

basic

Most of the metals react with oxygen to form metal oxides.

For example: magnesium reacts with oxygen to form magnesium oxide. The reaction involved is:

$\text{2Mg(s)}+{\text{O}}_2\text{(g)}\to \text{2MgO(s)}$

The metal oxide form alkali solution when dissolved in water. This solution turns red litmus paper to blue. Hence, these metal oxides are basic in nature.