Template:Infobox manganese

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Manganese, 25Mn
Template:Infobox element/symbol-to-top-image/alt
Manganese
Pronunciation/ˈmæŋɡənz/ (MANG-gə-neez)
Appearancesilvery metallic
Standard atomic weight Ar, std(Mn)54.938043(2)[1]
Manganese in the periodic cairt
Hydrogen Helium
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon
Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Airn Cobalt Nickel Capper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Siller (element) Cadmium Indium Tin Antimony Tellurium Iodine Xenon
Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gowd Mercur (element) Thallium Leid (element) Bismuth Polonium Astatine Radon
Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Ununtrium Flerovium Ununpentium Livermorium Ununseptium Ununoctium
-

Mn

Tc
chromiummanganeseiron
Atomic nummer (Z)25
Groupgroup 7
Periodperiod 4
Blockd-block
Element category  Transeetion metal
Electron confeeguration[Ar] 3d5 4s2
Electrons per shell2, 8, 13, 2
Pheesical properties
Phase at STPsolit
Meltin pynt1519 K ​(1246 °C, ​2275 °F)
Bylin pynt2334 K ​(2061 °C, ​3742 °F)
Density (near r.t.)7.21 g/cm3
when liquid (at m.p.)5.95 g/cm3
Heat o fusion12.91 kJ/mol
Heat o vapourisation221 kJ/mol
Molar heat capacity26.32 J/(mol·K)
Vapour pressur
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 1228 1347 1493 1691 1955 2333
Atomic properties
Oxidation states−3, −2, −1, 0, +1, +2, +3, +4, +5, +6, +7 (dependin on the oxidation state, an acidic, basic, or amphoteric oxide)
ElectronegativityPauling scale: 1.55
Ionisation energies
Atomic radiusempirical: 127 pm
Covalent radius139±5 (low spin), 161±8 (high spin) pm
Colour lines in a spectral range
Colour lines in a spectral range
Spectral lines o manganese
Ither properties
Naitural occurrenceprimordial
Creestal structurbody-centred cubic (bcc)
Body-centered cubic creestal structur for manganese
Speed o soond thin rod5150 m/s (at 20 °C)
Thermal expansion21.7 µm/(m·K) (at 25 °C)
Thermal conductivity7.81 W/(m·K)
Electrical resistivity1.44 µ Ω·m (at 20 °C)
Magnetic orderinparamagnetic
Young's modulus198 GPa
Bulk modulus120 GPa
Mohs haurdness6.0
Brinell haurdness196 MPa
CAS Nummer7439-96-5
History
DiskiveryTorbern Olof Bergman (1770)
First isolationJohann Gottlieb Gahn (1774)
Main isotopes o manganese
Iso­tope Abun­dance Hauf-life (t1/2) Decay mode Pro­duct 52Mn syn 5.591 d ε 52Cr
β+ 52Cr
γ -
53Mn trace 3.74×106 y ε 53Cr
54Mn syn 312.3 d ε 54Cr
γ -
55Mn 100% stable
| references
style="text-align:left"|
in calc from C diff report ref
C 1246
K 1519 1519 0
F 2275 2275 0
WD 2271 Fahrenheit 1243 Celsius Edit this at Wikidata [2]
input C: 1246, K: 1519, F: 2275
comment
style="text-align:left"|
in calc from C diff report ref
C 2061
K 2334 2334 0
F 3742 3742 0
WD 3564 Fahrenheit 1961 Celsius Edit this at Wikidata [2]
input C: 2061, K: 2334, F: 3742
comment

References

  1. Meija, Juris; et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry. 88 (3): 265–91. doi:10.1515/pac-2015-0305.
  2. a b http://www.cdc.gov/niosh/npg/npgd0379.html.