Electronic data		Thermal data		Steric data
Shells: 2,8,14,2 Orbitals: [Ar] 3d6 4s2 Electronegativity: 1.6, 1.8 1. Ionization potential: 7.9024 eV 2. Ionization potential: 16.18 eV 3. Ionization potential: 30.651 eV Oxidation states: 6,3,2,0,-2 Electrical conductivity: 0.0993 10^6		Melting point: 1535 °C Boiling point: 2861 °C Specific heat: 0.44 J/gK Heat of fusion: 13.80 kJ/mol Heat of vaporization: 349.60 kJ/mol Thermal conductivity: 0.802 W/cmK		Atomic radius: 1.72 Å Ionic radius: 0.55 Å () Covalent radius: 1.17 Å Atomic volume: 7.1 cm³/mol Density (293 K): 7.86 g/cm³ Crystal structure: Cubic: Body centered

Legend     Pocket calculator

Nuclide	Abundance [%]	Mass	Spin	Halflife	Decay mode	Decay tree
52Fe	0	52	0	8.28h	+,EC	View
54Fe	5.82	53.9396	0	--	stable	--
55Fe	0	54.938	3/2	2.73y	EC	View
56Fe	91.66	55.9349	0	--	stable	--
57Fe	2.19	56.9354	1/2	--	stable	--
58Fe	0.33	57.9333	0	--	stable	--
59Fe	0	58.935	3/2	45.51d	-	View
60Fe	0	60	0	1.5E06y	-	View

Legend

Name origin:	Anglo-Saxon: iron; symbol from Latin: ferrum (iron)
Description:	Malleable, ductile, silvery-white metal. Fourth most abundant element in the earth's crust (56,300 ppm). Ninth most abundant element in the universe.
Discovered by:	Known to the ancients
Year:	--
Place:	Unknown
Sources:	Obtained from iron ores. Pure metal produced in blast furnaces by layering limestone, coke and iron ore and forcing hot gasses into the bottom. This heats the coke red hot and the iron is reduced from its oxides and liquified where it flows to t
Use(s):	Used in steel and other alloys. Essential for humans. It is the chief constituent of hemoglobin which carries oxygen in blood vessels. Its oxides are used in magnetic tapes and disks.