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physical object > natural object > particle > element > column grouped element > transition metal > cobalt > cobalt 57

cobalt 57 (57Co)
subject			fact

cobalt 57	has symbol 57Co
	has nuclear magnetic moment μ = +7.72 nuclear magnetons with diamagnetic correction
	has nuclear spin I = 7/2- h/2π
	has decay mode EC (0.836 MeV)
	has decay mode γ
	has half life 271.8 days
	has number of nucleons 57
	has number of neutrons 30
	has atomic mass 56.936294
	has uses research
	has uses medical diagnosis
	is an instance of cobalt
cobalt	has lethal intake 80 mg kg-1 chloride ingested by rat
	has main mining area Zaire, Morocco, Sweden, Canada
	has mineral cobaltite, erythrite, glaucodot, linnaerite, skutterudite (smaltite)
	has neutron scattering length 0.278 × 10-12 cm
	has electron affinity 63.8 kJ mol-1 from Co to Co-
	has toxic intake 500 mg
	has poisson's ratio 0.32 GPa
	has bulk modulus 181.5 GPa
	has rigidity modulus 82 GPa
	has young's modulus 211 GPa
	has mass magnetic susceptibility ferromagnetic
	has electrical resistivity 6.24 × 10-8 Ω m at 293 K
	has covalent radii 116 pm
	has thermal neutron capture cross section 37.2 barns
	has longest lived isotope cobalt 59
	has isotope mass range 35m to 64
	has number of isotopes 17 including nuclear isomers
	has pronunciation koh-bolt
	has name origin kobald = goblin from German
	has discovery location Stockholm, Sweden
	has abundance 7.94 × 104 in Sun relative to H = 1 × 1012
	has abundance 20 p.p.m. in Earth's crust
	has abundance 6.9 × 10-6 p.p.m. in Pacific surface seawater
	has abundance 1.1 × 10-6 p.p.m. in deep Pacific seawater
	has specimen foil, pieces, powder, rod and wire. Care !
	has world production 17000 tonnes year-1
	has chief source cobaltite, skutterudite
	has mass absorption coefficient 313 cm2 g-1 for CuKalpha X-ray diffraction
	has mass absorption coefficient 42.5 cm2 g-1 for MoKalpha X-ray diffraction
	has space group Fm3m for α-Co
	has space group P63/mmc for ε-Co
	has crystal cell dimension a = 354.41 pm for α-Co
	has crystal cell dimension a = 250.7, c = 406.9 pm for ε-Co
	has crystal type f.c.c. for α-Co
	has crystal type h.c.p. for ε-Co
	has atomic emission line 240.725 nm for Co I (used in atom absorption spectrometry)
	has atomic emission line 242.493 nm for Co I
	has atomic emission line 340.512 nm for Co I
	has atomic emission line 344.364 nm for Co I
	has atomic emission line 345.350 nm for Co I (strong)
	has atomic emission line 350.228 nm for Co I
	has atomic emission line 356.938 nm for Co I
	has term symbol 4F9/2 in ground state
	has electron configuration [Ar]3d74s2 in ground state
	has mass of element in person 3 mg for a 70 kg average person
	has daily dietary intake 0.005 - 1.8 mg
	has level in humans 0.0002 - 0.04 mg dm-3 in blood
	has level in humans 0.01 - 0.04 p.p.m. in bone
	has level in humans 0.06 - 1.1 p.p.m. in liver
	has level in humans 0.028 - 0.65 p.p.m. in muscle
	has hazard compounds have low toxicity when ingested, but produce vomiting. Suspected carcinogen.
	has biological role essential to most species, including humans
	has linear expansion coefficient 13.36 × 10-6 K-1
	has thermal conductivity 100 W m-1 K-1 at 300 K
	has molar volume 6.62 cm3
	has heat capacity 24.81 J K-1 mol-1 for solid at constant pressure 0.1 MPa at 298.15 K
	has heat capacity 23.020 J K-1 mol-1 for gas at constant pressure 0.1 MPa at 298.15 K
	has heat of vaporization 382.4 kJ mol-1
	has heat of fusion 15.2 kJ mol-1
	has boiling point 3143 K
	has melting point 1768 K
	has electronegativity 1.88 Pauling
	has relative atomic mass 58.93320 in units of 12C = 12.000
	has ionic radii 64 pm for Co3+
has ionic radii 82 pm for Co2+
has atomic radii 125 pm
has number of protons 27
has registry number 7440-48-4 for Chemical Abstracts System database
has density 8900 kg m-3 for solid at 293 K
has density 7670 kg m-3 for liquid at 293 K at melting point
has ocean oxidation state II
has ocean residence time 40 years
has atomic number 27
reacts with dilute acids
has discovery date 1735
has discoverer Georg Brandt
has image
scavenged oceanic element	has ocean concentration decreasing 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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