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آهن

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Also known as element 26

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OverviewAI-generated

Iron is a chemical element with the symbol Fe and atomic number 26. It is classified as a metal and a primary metabolite. The substance has a density of 7.874 and a melting point of 1538. Its mass is recorded as 55.845, with a thermal conductivity of 84. Iron exhibits ferromagnetism and has a relative permeability of 200000. It can exist in oxidation states of -2, -1, 1, and 2.

The element was discovered or invented in 5000 BCE. It is described by sources including the Bible Encyclopedia of Archimandrite Nicephorus and the Brockhaus and Efron Encyclopedic Dictionary. In medical contexts, iron treats conditions such as iron deficiency anemia and hypochromic anemia. It is distinct from serum iron. The substance has an embodied energy of 25. It is referenced by 7,590 other encyclopedia articles.

Synthesized by Vinony from 34 facts across 4 sources: Wikidata, PubChem, PubMed, Vinony graph. Generated from structured data (not the Wikipedia text) and checked against those facts — may still contain errors.

Chemical data

Formula: Fe
Molecular weight: 55.84 g/mol
IUPAC name: iron
SMILES: [Fe]
InChIKey: XEEYBQQBJWHFJM-UHFFFAOYSA-N
Polar surface area: 0 Å²
H-bond donors: 0
H-bond acceptors: 0
Formal charge: 0

via PubChem

Research

312,259 papers

Oral iron supplementation: new formulations, old questions.ReviewHaematologica · 2024Pantopoulos KDOI: 10.3324/haematol.2024.284967
Iron Deficiency in Adults: A Review.ReviewJAMA · 2025Auerbach M, DeLoughery TG, Tirnauer JSDOI: 10.1001/jama.2025.0452
Hepcidin and Iron in Health and Disease.ReviewAnnual review of medicine · 2023Nemeth E, Ganz TDOI: 10.1146/annurev-med-043021-032816
Iron deficiency.ReviewBlood · 2019Camaschella CDOI: 10.1182/blood-2018-05-815944
Hepcidin-Ferroportin Interaction Controls Systemic Iron Homeostasis.ReviewInternational journal of molecular sciences · 2021Nemeth E, Ganz TDOI: 10.3390/ijms22126493
Iron Deficiency Anemia.ReviewAdvances in experimental medicine and biology · 2025Li X, Finberg KEDOI: 10.1007/978-3-031-92033-2_12
The Evaluation of Iron Deficiency and Iron Overload.ReviewDeutsches Arzteblatt international · 2021Gattermann N, Muckenthaler MU, Kulozik AE et al.DOI: 10.3238/arztebl.m2021.0290
Iron and the endurance athlete.ReviewApplied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme · 2014Hinton PSDOI: 10.1139/apnm-2014-0147

Wikidata facts

Instance of: metal
Subclass of: medication
Part of: group 8
Mass: 55.845
Image: Iron electrolytic and 1cm3 cube.jpg
Has use: ferroalloy

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element symbol: Fe
Commons category: Iron
topic's main category: Category:Iron
atomic number: 26
oxidation state: 6
magnetic ordering: ferromagnetism
canonical SMILES: [Fe]
chemical formula: Fe
Commons gallery: Iron
medical condition treated: hypochromic anemia
thermal conductivity: 84
density: 7.874
melting point: 1538
time of discovery or invention: 5000-00-00
on focus list of Wikimedia project: Wikipedia:Vital articles/Level/4
relative permeability: 200000
embodied energy: 25
has characteristic: ferromagnetism
boiling point: 2861
Unicode character: 鐵
electronegativity: 1.83
IMA Mineral Symbol: Fe
ionic radius: 0.78
electron configuration: [Ar] 3d⁶ 4s²
associated hazard: iron poisoning
P8168: Saarbrücken Castle

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