chromium 50 | has symbol 50Cr |  |
has natural abundance 4.345% |  |
has nuclear spin I = 0+ h/2π |  |
has number of nucleons 50 |  |
has number of neutrons 26 |  |
has atomic mass 49.9460464 |  |
has uses isotopically enriched samples available for experimental purposes |  |
is an instance of chromium |  |
chromium | has lethal intake 70 mg kg-1 metal taken oraly in humans |  |
has reserves 1 × 109 tonnes |  |
has main mining area Turkey, South Africa, Zimbabwe, Russia, Philipipines |  |
has mineral chromite, crocoite |  |
has neutron scattering length 0.3635 × 10-12 cm |  |
has electron affinity 64.3 kJ mol-1 from Cr to Cr- |  |
has toxic intake 200 mg |  |
has poisson's ratio 0.21 GPa |  |
has bulk modulus 160.2 GPa |  |
has rigidity modulus 115.3 GPa |  |
has young's modulus 279 GPa |  |
has mass magnetic susceptibility +4.45 × 10-8 kg-1 m3 for solid |  |
has electrical resistivity 12.7 × 10-8 Ω m at 293 K |  |
has thermal neutron capture cross section 3.1 barns |  |
has longest lived isotope chromium 52 |  |
has isotope mass range 45 to 57 |  |
has number of isotopes 13 including nuclear isomers |  |
has pronunciation kroh-mi-uhm |  |
has name origin chroma = colour from Greek |  |
has discovery location Paris, France |  |
has abundance 5.13 × 105 in Sun relative to H = 1 × 1012 |  |
has abundance 100 p.p.m. in Earth's crust |  |
has abundance 1.8 × 10-4 p.p.m. in Atlantic surface seawater |  |
has abundance 2.3 × 10-4 p.p.m. in deep Atlantic seawater |  |
has abundance 1.5 × 10-4 p.p.m. in Pacific surface seawater |  |
has abundance 2.5 × 10-4 p.p.m. in deep Pacific seawater |  |
has specimen chips, chunks, crystallites or powder. Safe. |  |
has world production 20000 tonnes year-1 for chromium metal |  |
has world production 9.6 × 106 tonnes year-1 for chromite ore |  |
has chief source chromite |  |
has mass absorption coefficient 260 cm2 g-1 for CuKalpha X-ray diffraction |  |
has mass absorption coefficient 31.1 cm2 g-1 for MoKalpha X-ray diffraction |  |
has space group Im3m |  |
has crystal cell dimension a = 288.46 pm |  |
has crystal type b.c.c. |  |
has atomic emission line 357.869 nm for Cr I (used in atom absorption spectrometry) |  |
has atomic emission line 359.349 nm for Cr I |  |
has atomic emission line 360.533 nm for Cr I |  |
has atomic emission line 425.435 nm for Cr I (strong) |  |
has atomic emission line 427.480 nm for Cr I |  |
has atomic emission line 428.972 nm for Cr I |  |
has atomic emission line 520.844 nm for Cr I |  |
has term symbol 7S3 in ground state |  |
has electron configuration [Ar]3d54s1 in ground state |  |
has mass of element in person 14 mg for a 70 kg average person |  |
has daily dietary intake 0.01 - 1.2 mg |  |
has level in humans 0.006 - 0.11 mg dm-3 in blood |  |
has level in humans 0.1 - 0.33 p.p.m. in bone |  |
has level in humans 0.02 - 3.3 p.p.m. in liver |  |
has level in humans 0.024 - 0.84 p.p.m. in muscle |  |
has hazard poison by ingestion, suspected carcinogen, chromates are corrosive to tissue |  |
has biological role essential to some species, including humans, stimulates metabolism |  |
has linear expansion coefficient 6.2 × 10-6 K-1 |  |
has thermal conductivity 93.7 W m-1 K-1 at 300 K |  |
has molar volume 7.23 cm3 |  |
has heat capacity 23.35 J K-1 mol-1 for solid at constant pressure 0.1 MPa at 298.15 K |  |
has heat capacity 20.79 J K-1 mol-1 for gas at constant pressure 0.1 MPa at 298.15 K |  |
has heat of vaporization 348.78 kJ mol-1 |  |
has heat of fusion 15.3 kJ mol-1 |  |
has boiling point 2945 K |  |
has melting point 2130 ± 20 K |  |
has electronegativity 1.66 Pauling |  |
has relative atomic mass 51.9961 in units of 12C = 12.000 |  |
has ionic radii 56 pm for Cr4+ |  |
has ionic radii 64 pm for Cr3+ |  |
has ionic radii 84 pm for Cr2+ |  |
has atomic radii 125 pm |  |
has number of protons 24 |  |
has registry number 7440-47-3 for Chemical Abstracts System database |  |
has density 7190 kg m-3 for solid at 293 K |  |
has density 6460 kg m-3 for liquid at 2130 K melting point |  |
has ocean oxidation state VI |  |
has ocean residence time 10000 years |  |
has atomic number 24 |  |
reacts with HCL and H2SO4 by disolving |  |
has discovery date 1780 |  |
has discoverer Nicholas Louis Vauquelin |  |
has image  |  |
recycled oceanic element | has ocean concentration increasing with depth |  |
chalcophile element | has occurrence in sulfide minerals |  |
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 |  |