![]() ![]() Sulfur S + O 2 → SO 2 & 2S + 3O 2 → 2SO 3.Mg (s) + H 2O (g) → MgO (s) + H 2(g) Reactions of oxidation are: Magnesium reacts slowly with cold water, but very exothermically with hot water and steam and gives the oxide: The resulting solution is strongly alkaline, and has a pH of 14: Water although very weak oxidising agent, very easy and quickly oxidized sodium. Oxides of Period 3 elements are basic to amphoteric to acidic. ![]()
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