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physical object > natural object > particle > element > metallic element > alkali earth metal > magnesium |
magnesium (Mg, 1S0 in ground state) | ||||
subject | fact |
magnesium | has symbol Mg | |
has lethal intake 8100 mg kg-1 for chloride, oral, rat | ||
has reserves > 2 × 1010 tonnes as ores; and > 1 × 1024 tonnes in the sea | ||
has main mining area Austria, China, Poland, Russia, USA, India, Greece, Canada | ||
has mineral brucite, carnalite, cordierite, diopside, dolomite, enstatite, epsomite, kiersite, magnesite, pyrope, spinel | ||
has neutron scattering length 0.5375 × 10-12 cm | ||
has electron affinity -21 kJ mol-1 from Mg to Mg- | ||
has toxic intake low toxicity | ||
has poisson's ratio 0.291 GPa | ||
has bulk modulus 35.6 GPa | ||
has rigidity modulus 17.3 GPa | ||
has young's modulus 44.7 GPa | ||
has mass magnetic susceptibility +6.8 × 10-9 kg-1 m3 for solid | ||
has electrical resistivity 4.38 × 10-8 Ω m at 293 K | ||
has covalent radii 136 pm | ||
has thermal neutron capture cross section 0.063 barns | ||
has longest lived isotope magnesium 24 | ||
has isotope mass range 20 to 31 | ||
has number of isotopes 12 including nuclear isomers | ||
has pronunciation mag-neez-iuhm | ||
has name origin Magnesia = district of Thessaly from Greek | ||
has discovery location Edinburgh, Scotland | ||
has abundance 4.0 × 107 in Sun relative to H = 1 × 1012 | ||
has abundance 23000 p.p.m. in Earth's crust | ||
has abundance 1200 p.p.m. in seawater | ||
has specimen chips, granules, powder, ribbon, rod or turnings. Safe. | ||
has world production 325000 tonnes year-1 | ||
has chief source seawater; and the ores or dolomite, magnesite; carnallite and brucite | ||
has mass absorption coefficient 38.6 cm2 g-1 for CuKα X-ray diffraction | ||
has mass absorption coefficient 4.11 cm2 g-1 for MoKα X-ray diffraction | ||
has space group P63/mmc | ||
has crystal cell dimension a = 320.94; c = 521.03 pm | ||
has crystal type h.c.p. | ||
has atomic emission line 279.553 nm for Mg II | ||
has atomic emission line 280.270 nm for Mg II | ||
has atomic emission line 285.213 nm for Mg I (strong) | ||
has atomic emission line 383.829 nm for Mg I | ||
has atomic emission line 518.361 nm for Mg I | ||
has term symbol 1S0 in ground state | ||
has electron configuration [Ne]3s2 in ground state | ||
has mass of element in person 19 g for a 70 kg average person | ||
has daily dietary intake 250 - 380 mg | ||
has level in humans 37.8 mg dm-3 in blood | ||
has level in humans 700 - 1800 p.p.m. in bone | ||
has level in humans 590 p.p.m. in liver | ||
has level in humans 900 p.p.m. in muscle | ||
has hazard compounds vary in toxicity but no evidence that metal produces systemic poisoning | ||
has biological role essential to all species | ||
has linear expansion coefficient 26.1 × 10-6 K-1 | ||
has thermal conductivity 156 W m-1 K-1 at 300 K | ||
has molar volume 13.98 cm3 | ||
has heat capacity 24.89 J K-1 mol-1 for solid 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 128.7 kJ mol-1 | ||
has heat of fusion 9.04 kJ mol-1 | ||
has boiling point 1363 K | ||
has melting point 922.0 K | ||
has electronegativity 1.31 Pauling | ||
has relative atomic mass 24.3050 in units of 12C = 12.000 | ||
has ionic radii 79 pm for Mg2+ | ||
has atomic radii 160 pm | ||
has number of protons 12 | ||
has registry number 7439-95-4 for Chemical Abstracts System database | ||
has density 1738 kg m-3 for solid at 293 K | ||
has density 1585 kg m-3 for liquid at 922.0 K melting point | ||
has synthesis mechanism electrolysis of fused MgCl2 | ||
has ocean oxidation state II | ||
has ocean residence time 1 × 107 years | ||
has atomic number 12 | ||
reacts with air when ignited | ||
reacts with hot water | ||
has discovery date 1755 | ||
has discoverer Joseph Black | ||
has uses bulk metal and lightweight alloys | ||
has uses as a 'sacrificial' electrode to protect other metals exposed to seawater and ground | ||
has image | ||
has definition silvery white, lustrous and relatively soft metal | ||
is a kind of alkali earth metal | ||
is a kind of lithophile element | ||
is a kind of accumulating oceanic element | ||
alkali earth metal | has hardness malleable, extrudable and machinable | |
accumulating oceanic element | has ocean concentration depth indenpendent | |
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 |
Kinds of magnesium :
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