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physical object > natural object > particle > element > column grouped element > transition metal > iron > iron 56

iron 56 (56Fe)
subject			fact

iron 56	has symbol 56Fe
	has natural abundance 91.72
	has nuclear spin I = 0+ h/2π
	has number of nucleons 56
	has number of neutrons 30
	has atomic mass 55.934939
	has uses isotopically enriched samples available for experimental purposes
	is an instance of iron
iron	has lethal intake 7 - 35 grams
	has reserves 1.1 × 1011 tonnes
	has main mining area USA, Canada, Sweden, South Africa, Russia, India, Japan
	has mineral goethite, hematite, lepidocrocite, magnetite, siderite, ...
	has neutron scattering length 0.954 × 10-12 cm
	has electron affinity 15.7 kJ mol-1 from Fe to Fe-
	has toxic intake 200 mg Iron (II) compounds are more toxic than iron (III)
	has poisson's ratio 0.27 GPa for cast iron
	has poisson's ratio 0.27 GPa for steel
	has bulk modulus 109.5 GPa for cast iron
	has bulk modulus 160 GPa for steel
	has rigidity modulus 60.0 GPa for cast iron
	has rigidity modulus 81 GPa for steel
	has young's modulus 152.3 GPa for cast iron
	has young's modulus 208 GPa for steel
	has mass magnetic susceptibility ferromagnetic
	has electrical resistivity 9.71 × 10-8 Ω m at 293 K
	has covalent radii 116 pm
	has thermal neutron capture cross section 2.56 barns
	has longest lived isotope iron 56
	has isotope mass range 49 to 63
	has number of isotopes 16 including nuclear isomers
	has pronunciation iy-on ?
	has name origin iron from Anglo-Saxon
	has abundance 3.16 × 107 in Sun relative to H = 1 × 1012
	has abundance 41000 p.p.m. in Earth's crust
	has abundance p.p.m. in seawater
	has abundance 1 × 10-4 p.p.m. in Atlantic surface seawater
	has abundance 4 × 10-4 p.p.m. in deep Atlantic seawater
	has abundance 1 × 10-5 p.p.m. in Pacific surface seawater
	has abundance 1 × 10-4 p.p.m. in deep Pacific seawater
	has specimen chips, filings, foil, granules, powder and wire. Safe.
	has world production 7.16 × 108 tonnes year-1
	has chief source hematite, magnetite, goethite, lepidocrocite, siderite
	has mass absorption coefficient 308 cm2 g-1 for CuKα X-ray diffraction
	has mass absorption coefficient 38.5 cm2 g-1 for MoKα X-ray diffraction
	has space group Im3m for α-Fe
	has space group Fm3m for γ-Fe
	has space group Im3m for δ-Fe
	has crystal cell dimension a = 286.645 pm for α-Fe
	has crystal cell dimension a = 364.68 pm for γ-Fe
	has crystal cell dimension a = 293.22 pm for δ-Fe
	has crystal type b.c.c. for α-Fe
	has crystal type c.c.p. for γ-Fe
	has crystal type b.c.c. for δ-Fe
	has atomic emission line 248.327 nm for Fe I (strong)
	has atomic emission line 248.814 nm for Fe I
	has atomic emission line 252.285 nm for Fe I
	has atomic emission line 344.061 nm for Fe I
	has atomic emission line 371.994 nm for Fe I
	has atomic emission line 373.713 nm for Fe I
	has atomic emission line 374.556 nm for Fe I
	has atomic emission line 385.991 nm for Fe I (strong)
	has term symbol 5D4 in ground state
	has electron configuration [Ar]3d64s2 in ground state
	has mass of element in person 4.2 kg for a 70 kg average person
	has daily dietary intake 6 - 40 mg
	has level in humans 447 mg dm-3 in blood
	has level in humans 3 - 380 p.p.m. in bone
	has level in humans 250 - 1400 p.p.m. in liver
	has level in humans 180 p.p.m. in muscle
	has hazard fire or explosion of dust chronic exposure can cause pneumoconiosis
	has hazard deficiency leads to anemia but excess causes liver and kidney damage
	has biological role essential to all species
has linear expansion coefficient 12.3 × 10-6 K-1
has thermal conductivity 80.2 W m-1 K-1 at 300 K
has molar volume 7.09 cm3
has heat capacity 25.10 J K-1 mol-1 for solid at constant pressure 0.1 MPa at 298.15 K
has heat capacity 25.677 J K-1 mol-1 for gas at constant pressure 0.1 MPa at 298.15 K
has heat of vaporization 351.0 kJ mol-1
has heat of fusion 14.9 kJ mol-1
has boiling point 3023 K
has melting point 1808 K
has electronegativity 1.83 Pauling
has relative atomic mass 55.845 in units of 12C = 12.000
has ionic radii 67 pm for Fe2+
has ionic radii 82 pm for Fe3+
has atomic radii 124 pm
has number of protons 26
has registry number 7439-89-6 for Chemical Abstracts System database
has density 7874 kg m-3 for solid at 293 K
has density 7035 kg m-3 for liquid at 1808 K melting point
has synthesis mechanism
has ocean oxidation state III
has ocean residence time 98 years
has symbol name origin ferrum = iron from Latin
has atomic number 26
reacts with damp air by rusting
reacts with dilute acids by disolving
has discovery date 2500 B.C.
has image
recycled oceanic element	has ocean concentration increasing with depth
siderophile element	has occurrence in planet metallic core and associated with iron
column grouped element	has group a column number in the table of the elements
element	is a part of Universe
	has synonym atom
particle	obeys uncertainty principle
	has frequency inversely proportional to the wavelength
	has wavelength inversely proportional to its momentum
	has charge
	has mass
physical object	has location or center of gravity
	has angular momentum
	has velocity
	has momentum
	has temperature
	has volume
	has extent
	has material

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