Question

in the reaction of formation of magnesium oxide magnesium undergoes ______. a decomposition b single displacement c reduction d oxidation

Explanation:

In the formation of magnesium oxide (\(MgO\)), magnesium (\(Mg\)) reacts with oxygen (\(O_2\)). The chemical equation is \(2Mg + O_2
ightarrow 2MgO\). In this reaction, magnesium loses electrons. Oxidation is defined as the loss of electrons. For example, in \(Mg
ightarrow Mg^{2 +}\), magnesium atom (\(Mg\)) loses 2 electrons. Reduction is the gain of electrons, decomposition is a reaction where a single compound breaks into simpler substances (\(AB
ightarrow A + B\)), and single - displacement is \(A+BC
ightarrow AC + B\).

Answer:

D. oxidation