Q
what is the oxidation number of iron in magnetite fe3o4
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In magnetite, Fe3O4, iron exists in two different oxidation states. The compound can be viewed as FeO · Fe2O3, where FeO represents iron (II) oxide with iron in the +2 oxidation state, and Fe2O3 represents iron (III) oxide, with iron in the +3 oxidation state. Therefore, in magnetite, two-thirds of the iron atoms have a +3 oxidation number, and one-third have a +2 oxidation number. This mixed valence is what gives magnetite its unique properties. The overall formula can also be written as Fe(II)Fe(III)2O4 to reflect the oxidation states directly. This mixed-valence nature is a key aspect of its magnetic properties and is fundamental to understanding the behavior of magnetite in various chemical and physical contexts.
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