Basic oxide

A basic oxide is an oxide that shows basic properties in opposition to acidic oxides and that either

reacts with water to form a base; or
reacts with an acid to form a salt and water.

Examples include:

Sodium oxide, which reacts with water to produce sodium hydroxide
Magnesium oxide, which reacts with hydrochloric acid to form magnesium chloride
Copper(II) oxide, which reacts with nitric acid to form copper nitrate

Basic oxides are oxides mostly of metals, especially alkali and alkaline earth metals.

See also

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