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physical object > natural object > particle > element > column grouped element > transition metal > manganese |
manganese (Mn, 6S5/2 in ground state) | ||||
subject | fact |
manganese | has symbol Mn | |
has lethal intake 1715 mg kg-1 for chloride in mouse | ||
has reserves 3.6 × 109 tonnes (plus ocean floor nodules which are 24% Mn) | ||
has main mining area South Africa, Russia, Gabon, Australia, Brazil | ||
has mineral bixbyite, managanite, pyrolusite, rhodochrosite, rhodonite (jewelry), romanechite | ||
has neutron scattering length -0.373 × 10-12 cm | ||
has electron affinity less than 0 kJ mol-1 from Mn to Mn- | ||
has toxic intake slighly toxic by ingestion | ||
has poisson's ratio 0.24 GPa | ||
has bulk modulus n.a. GPa | ||
has rigidity modulus 79.5 GPa | ||
has young's modulus 191 GPa | ||
has mass magnetic susceptibility +1.21 × 10-7 kg-1 m3 for solid | ||
has electrical resistivity 185.0 × 10-8 Ω m at 298 K | ||
has covalent radii 117 pm | ||
has thermal neutron capture cross section 13.3 barns | ||
has longest lived isotope manganese 55 | ||
has isotope mass range 49 to 62 | ||
has number of isotopes 15 including nuclear isomers | ||
has pronunciation man-gan-eez | ||
has name origin magnes = magnet from Latin or magnesia nigri = black magnesia (MnO2) | ||
has discovery location Stockholm, Sweden | ||
has abundance 2.63 × 105 in Sun relative to H = 1 × 1012 | ||
has abundance 950 p.p.m. in Earth's crust | ||
has abundance 1.0 × 10-4 p.p.m. in Atlantic surface seawater | ||
has abundance 0.96 × 10-4 p.p.m. in deep Atlantic seawater | ||
has abundance 1.0 × 10-4 p.p.m. in Pacific surface seawater | ||
has abundance 0.4 × 10-4 p.p.m. in deep Pacific seawater | ||
has specimen chips, flake or powder. Safe. | ||
has world production 6.22 × 106 tonnes year-1 | ||
has chief source pyrolusite, romanechite (also known as psilomelane), manganite (useful but rare) | ||
has mass absorption coefficient 285 cm2 g-1 for CuKalpha X-ray diffraction | ||
has mass absorption coefficient 34.7 cm2 g-1 for MoKalpha X-ray diffraction | ||
has space group I-43m for α-Mn | ||
has crystal cell dimension a = 891.39 pm for α-Mn | ||
has crystal type b.c.c. for α-Mn | ||
has atomic emission line 257.610 nm for Mn I | ||
has atomic emission line 279.482 nm for Mn I (used in atom absorption spectrometry) | ||
has atomic emission line 279.827 nm for Mn I | ||
has atomic emission line 403.076 nm for Mn I (strong) | ||
has atomic emission line 403.307 nm for Mn I | ||
has atomic emission line 403.449 nm for Mn I | ||
has term symbol 6S5/2 in ground state | ||
has electron configuration [Ar]3d54s2 in ground state | ||
has mass of element in person 12 mg for a 70 kg average person | ||
has daily dietary intake 0.4 - 10 mg | ||
has level in humans 0.0016 - 0.075 mg dm-3 in blood | ||
has level in humans 0.2 - 100 p.p.m. in bone | ||
has level in humans 3.6 - 9.6 p.p.m. in liver | ||
has level in humans 0.2 - 2.3 p.p.m. in muscle | ||
has hazard exposure to dust or fumes should not exceed 5 mg m-3 | ||
has hazard compounds are experimental carcinogens and teratogens | ||
has biological role essential to all species | ||
has linear expansion coefficient 22 × 10-6 K-1 | ||
has thermal conductivity 7.82 W m-1 K-1 at 300 K | ||
has molar volume 7.38 cm3 | ||
has heat capacity 26.32 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 219.7 kJ mol-1 | ||
has heat of fusion 14.4 kJ mol-1 | ||
has boiling point 2235 K | ||
has melting point 1517 K | ||
has electronegativity 1.55 Pauling | ||
has relative atomic mass 54.93805 in units of 12C = 12.000 | ||
has ionic radii 52 pm for Mn4+ | ||
has ionic radii 70 pm for Mn3+ | ||
has ionic radii 91 pm for Mn2+ | ||
has atomic radii 124 pm | ||
has number of protons 25 | ||
has registry number 7439-96-5 for Chemical Abstracts System database | ||
has density 7440 kg m-3 for α-Mn solid at 293 K | ||
has density 6430 kg m-3 for liquid at 2235 K melting point | ||
has ocean oxidation state II | ||
has ocean residence time 50 years | ||
has atomic number 25 | ||
reacts with oxygen by burning | ||
reacts with water | ||
reacts with dilute acids by dissolving | ||
has discovery date 1774 (isolated) | ||
has discoverer J.G. Gahn | ||
has uses steel production, ceramics, feed supplements and fertilizer additives | ||
has image | ||
has definition hard, brittle, silvery metal | ||
is a kind of transition metal | ||
is a kind of chalcophile element | ||
is a kind of scavenged oceanic element | ||
scavenged oceanic element | has ocean concentration decreasing 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 |
Kinds of manganese :
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