Question

Complete the following reaction:
$\text{Mg}+{\text{O}}_2\to$ _______

• A. Magnesium oxide
• B. Magnesium dioxide
• C. Magnesium hydroxide
• D. Magnesium carbonate

Answer 1

The correct option is A Magnesium oxide

Oxygen reacts with other elements to give their respective oxides. So, when it reacts with magnesium it gives magnesium oxide. The reaction involved is:
$\text{Mg}+{\text{O}}_2\to \text{MgO}$