
Concept explainers
Interpretation: The oxidation process of magnesium needs to be explained.
Concept Introduction: Metals are oxidized in air (by the oxygen, O2 of the air) to form the corresponding oxides. The oxides of alkali earth metals are usually colorless. The oxidation process is usually exothermic, i.e., releases heat. The oxidation of magnesium, Mg with O of air produces a dazzling white light.

Answer to Problem 2E
Mg is oxidized in air to produce a dazzling white light.
Explanation of Solution
The oxidation of Mg in air produces a dazzling white light due to the formation of magnesium oxide, MgO as per the reaction below.
Here, Mg is a colorless metal, but the product of the oxidation, magnesium oxide, MgO is a white solid. The reaction also generates heat.
The oxidation of Mg produces a white solid with the evolution of heat.
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