Metal peroxide

Metal peroxides are metal-containing compounds with ionically- or covalently-bonded peroxide (O²⁻
₂) groups. This large family of compounds can be divided into ionic and covalent peroxide. The first class mostly contains the peroxides of the alkali and alkaline earth metals whereas the covalent peroxides are represented by such compounds as hydrogen peroxide and peroxymonosulfuric acid (H₂SO₅). In contrast to the purely ionic character of alkali metal peroxides, peroxides of transition metals have a more covalent character.

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