Template:Infobox molybdenum

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Molybdenum,  42Mo
Molybdenum crystaline fragment and 1cm3 cube.jpg
General properties
Appearancegray metallic
Staundart atomic wecht (Ar, staundart)95.95(1)[1]
Molybdenum 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
Cr

Mo

W
niobiummolybdenumtechnetium
Atomic nummer (Z)42
Groupgroup 6
Periodperiod 5
Element category  transition metal
Blockd-block
Electron confeeguration[Kr] 5s1 4d5
Electrons per shell
2, 8, 18, 13, 1
Pheesical properties
Phase (at STP)solit
Meltin pynt2896 K ​(2623 °C, ​4753 °F)
Bylin pynt4912 K ​(4639 °C, ​8382 °F)
Density (near r.t.)10.28 g/cm3
when liquid (at m.p.)9.33 g/cm3
Heat o fusion37.48 kJ/mol
Heat o vapourisation598 kJ/mol
Molar heat capacity24.06 J/(mol·K)
Vapour pressur
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 2742 2994 3312 3707 4212 4879
Atomic properties
Oxidation states6, 5, 4, 3, 2, 1[2], -1, -2
(strongly acidic oxide)
ElectronegativityPauling scale: 2.16
Atomic radiusempirical: 139 pm
Covalent radius154±5 pm
Coloyr lines in a spectral range
Spectral lines o Infobox molybdenum
Miscellanea
Creestal structurbody-centred cubic (bcc)
Body-centered cubic creestal structur for molybdenum
Speed o soond thin rod5400 m/s (at r.t.)
Thermal expansion4.8 µm/(m·K) (at 25 °C)
Thermal conductivity138 W/(m·K)
Thermal diffusivity54.3[3] mm2/s (at 300 K)
Electrical resistivity53.4 n Ω·m (at 20 °C)
Magnetic orderinparamagnetic[4]
Young's modulus329 GPa
Shear modulus126 GPa
Bouk modulus230 GPa
Poisson ratio0.31
Mohs haurdness5.5
Vickers haurdness1530 MPa
Brinell haurdness1500 MPa
CAS Nummer7439-98-7
History
DiskiveryCarl Wilhelm Scheele (1778)
First isolationPeter Jacob Hjelm (1781)
Main isotopes o molybdenum
Iso­tope Abun­dance Hauf-life (t1/2) Decay mode Pro­duct
92Mo 14.84% >1.9×1020 y (β+β+) 92Zr
93Mo syn 4×103 y ε 93Nb
94Mo 9.25% - (SF)
95Mo 15.92% - (SF)
96Mo 16.68% - (SF)
97Mo 9.55% - (SF)
98Mo 24.13% >1×1014 y ββ 98Ru
99Mo syn 65.94 h β 99mTc
γ -
100Mo 9.63% 7.8×1018 y (ββ) 100Ru
Decay modes in parentheses is predict, but hisna yet been observed
| references | in Wikidata

References

Thir references will appear in the airticle, but this list appears anerly on this page.
  1. Meija, J.; 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. "Molybdenum: molybdenum(I) fluoride compound data". OpenMOPAC.net. Retrieved 2007-12-10.
  3. A. Lindemann, J. Blumm (2009). Measurement of the Thermophysical Properties of Pure Molybdenum. 17th Plansee Seminar. 3.
  4. Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics 81st edition, CRC press.