calcium 46 | has symbol 46Ca | |
has natural abundance 0.004% | |
has nuclear magnetic moment μ = 0 nuclear magnetons with diamagnetic correction | |
has nuclear spin I = 0+ h/2π | |
has number of nucleons 46 | |
has number of neutrons 26 | |
has atomic mass 45.953689 | |
has uses isotopically enriched samples available for experimental purposes | |
is an instance of calcium | |
calcium | has lethal intake 6.45 grams kg-1 in carbonate form for rat | |
has reserves almost unlimited | |
has main mining area common everywhere | |
has mineral anhydrite, aragonite, calcite, dolomite, gypsum, shortite, vaterite | |
has neutron scattering length 0.476 × 10-12 cm | |
has electron affinity -186 kJ mol-1 from Ca to Ca- | |
has toxic intake non-toxic | |
has poisson's ratio 0.31 GPa | |
has bulk modulus 17.2 GPa | |
has rigidity modulus 7.9 GPa | |
has young's modulus 19.6 GPa | |
has mass magnetic susceptibility +1.4 × 10-8 kg-1 m3 for solid | |
has electrical resistivity 3.43 × 10-8 Ω m at 293 K | |
has covalent radii 174 pm | |
has thermal neutron capture cross section 0.43 barns | |
has longest lived isotope | |
has isotope mass range 36 to 51 | |
has number of isotopes 16 including nuclear isomers | |
has pronunciation kal-sium | |
has name origin calx = lime from Latin | |
has discovery location London, England | |
has abundance 2.24 × 106 in Sun relative to H = 1 × 1012 | |
has abundance 41000 p.p.m. in Earth's crust | |
has abundance 390 p.p.m. in Atlantic surface seawater | |
has abundance 430 p.p.m. in deep Atlantic seawater | |
has abundance 390 p.p.m. in Pacific surface seawater | |
has abundance 440 p.p.m. in deep Pacific seawater | |
has specimen granules, pieces or turings. Care ! | |
has world production 2000 tonnes year-1 for calcium metal | |
has world production 112 × 106tonnes year-1 for lime, CaO | |
has chief source calcite, dolomite, gypsum (used in cement and plaster) anhydrite (used to make H2SO4) | |
has mass absorption coefficient 162 cm2 g-1 for CuKα X-ray diffraction | |
has mass absorption coefficient 18.3 cm2 g-1 for MoKα X-ray diffraction | |
has space group | |
has crystal cell dimension a = pm | |
has crystal type | |
has atomic emission line 239.856 nm for Ca I | |
has atomic emission line 317.933 nm for Ca II | |
has atomic emission line 373.690 nm for Ca II | |
has atomic emission line 393.366 nm for Ca II (strong) | |
has atomic emission line 393.847 nm for Ca II | |
has atomic emission line 422.673 nm for Ca I (used in atom absorption spectrometry) | |
has term symbol 1S0 in ground state | |
has electron configuration [Ar]4s2 in ground state | |
has mass of element in person 1.00 kg for a 70 kg average person | |
has daily dietary intake 600 - 1400 mg | |
has level in humans 60.5 mg dm-3 in blood | |
has level in humans 170000 p.p.m. in bone | |
has level in humans 100 - 360 p.p.m. in liver | |
has level in humans 140 - 700 p.p.m. in muscle | |
has hazard calcium compounds are only toxic via the other elements they contain | |
has biological role essential to all species | |
has linear expansion coefficient 22 × 10-6 K-1 | |
has thermal conductivity 200 W m-1 K-1 at 300 K | |
has molar volume 25.86 cm3 | |
has heat capacity 25.31 J K-1 mol-1 for solid α form at constant pressure 0.1 MPa at 298.15 K | |
has heat capacity 20.786 J K-1 mol-1 for gas at constant pressure 0.1 MPa at 298.15 K | |
has heat of vaporization 149.95 kJ mol-1 | |
has heat of fusion 9.33 kJ mol-1 | |
has boiling point 1757 K | |
has melting point 1112 K | |
has electronegativity 1.00 Pauling | |
has relative atomic mass 40.078 in units of 12C = 12.000 | |
has ionic radii 106 pm for Ca2+ | |
has atomic radii 197 pm for α-form | |
has number of protons 20 | |
has registry number 7440-70-2 for Chemical Abstracts System database | |
has density 1550 kg m-3 for solid at 293 K | |
has density 1365 kg m-3 for liquid at 1112 K melting point | |
has synthesis mechanism heat calcium oxide (CaO) with aluminium metal in vacuum | |
has ocean oxidation state II | |
has ocean residence time 1 × 106 years | |
has atomic number 20 | |
reacts with oxygen and water but soon forms a thin protective oxide-nitride film preventing further corrosion | |
has discovery date 1808 (isolated) | |
has discoverer Sir Humphry Davy | |
has image | |
alkali earth metal | has hardness malleable, extrudable and machinable | |
recycled oceanic element | has ocean concentration increasing with depth | |
lithophile element | has occurrence in silicate materials such as igneous rocks | |
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 | |