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The brown color indicates that iron is at the oxidation state +3. Green and reddish brown stains on a limestone core sample, respectively corresponding to oxides/hydroxides of Fe 2+ and Fe 3+. Iron oxides feature as ferrous (Fe (II)) or ferric (Fe (III)) or both.
Iron oxide, also called ferric oxide is an inorganic compound with the chemical formula Fe2O3. It occurs in nature very abundantly and is widely distributed. It is a chemical complex which occurs naturally comprising iron and oxygen.
Hill system formula: Fe 1 O 1. CAS registry number: [1345-25-1] Formula weight: 71.844. Class: oxide. Colour: black. Appearance: crystalline solid. Melting point: 1370°C. Boiling point: decomposes at 3414. Density: 6000 kg m -3. The following are some synonyms of iron oxide: iron oxide. iron (II) oxide.
Formula: FeO. Molecular weight: 71.844. IUPAC Standard InChI:InChI=1S/Fe.O Copy. IUPAC Standard InChIKey:UQSXHKLRYXJYBZ-UHFFFAOYSA-N Copy. CAS Registry Number: 1345-25-1. Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file The 3d structure may be viewed using Java or Javascript.
Interactive periodic table showing names, electrons, and oxidation states. Visualize trends, 3D orbitals, isotopes, and mix compounds. Fully descriptive writeups.
Iron (III) oxide. Molecular formula: Fe 2 O 3. Average mass: 159.687. Monoisotopic mass: 159.854619. ChemSpider ID: 14147.
Alpha phase. α- Fe2O3 has the rhombohedral, corundum (α-Al 2 O 3) structure and is the most common form. It occurs naturally as the mineral hematite, which is mined as the main ore of iron.
