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Oxide
Chemical compound where oxygen atoms are combined with atoms of other elements / From Wikipedia, the free encyclopedia
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For negatively-charged polyatomic ion containing oxygen, see Oxyanions.
An oxide (/ˈɒksaɪd/) is a chemical compound containing at least one oxygen atom and one other element[1] in its chemical formula. "Oxide" itself is the dianion (anion bearing a net charge of –2) of oxygen, an O2– ion with oxygen in the oxidation state of −2. Most of the Earth's crust consists of oxides. Even materials considered pure elements often develop an oxide coating. For example, aluminium foil develops a thin skin of Al2O3 (called a passivation layer) that protects the foil from further oxidation.[2]
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