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Dec 27, 2008, 5:07 AM 0
iron 57
subject fact  
iron 57 has symbol 57Fe
has natural abundance 2.2
has NMR frequency 3.231 MHz where 1H = 100 MHz; 2.3488 T
has magnetogyric ratio 0.8661 × 107rad T-1 s-1
has NMR receptivity 4.2 × 10-3 where 13C = 1.00
has relative NMR sensitivity 3.37 × 10-5 where 1H = 1.00
has nuclear magnetic moment μ = +0.09062294 nuclear magnetons with diamagnetic correction
has nuclear spin I = 1/2- h/2π
has number of nucleons 57
has number of neutrons 31
has atomic mass 56.935395
has uses isotopically enriched samples available for experimental purposes
has uses Nuclear Magnetic Resonance
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 CuKαX-ray diffraction
has mass absorption coefficient 38.5 cm2 g-1 for MoKαX-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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