Ferric

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Ferric is a term that means containing or having to do with iron, derived from the Latin word ferrum, meaning "iron". In chemistry the term is reserved for iron with an oxidation number of +3, denoted Iron(III) or Fe3+, whereas ferrous indicates that it has oxidation number of +2, denoted Iron(II) or Fe2+, which combine with other atoms to form molecules.

Ferric oxide, formula Fe2O3 is red-brown colored and the main constituent of the mineral hematite.

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