Template:Infobox molybdenum: Difference between revisions

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Molybdenum,  42Mo
Template:Infobox element/symbol-to-top-image-alt
General properties
PronunciationTemplate:Infobox element/pronunciation
Appearancegray metallic
Standard atomic weight (Ar, standard)Template:Infobox element/standard atomic weight
Mass numberTemplate:Infobox element/symbol-to-most-stable-isotope (most stable isotope)
Molybdenum in the periodic table
Template:Infobox element/periodic table
Atomic number (Z)42
GroupTemplate:Infobox element/group
Periodperiod 5
Blockd-block
Element categoryTemplate:Infobox element/category format
Electron configuration[Kr] 4d5 5s1
Electrons per shell
2, 8, 18, 13, 1
Physical properties
Phase at STPsolid
Melting point2896 K ​(2623 °C, ​4753 °F)
Boiling point4912 K ​(4639 °C, ​8382 °F)
Density (near r.t.)10.28 g/cm3
when liquid (at m.p.)9.33 g/cm3
Heat of fusion37.48 kJ/mol
[[Enthalpy of vaporization|Heat of Template:Engvar]]598 kJ/mol
Molar heat capacity24.06 J/(mol·K)
[[Vapor pressure|Template:Engvar pressure]]
Atomic properties
Oxidation statesTemplate:Infobox element/symbol-to-oxidation-state
ElectronegativityPauling scale: 2.16
[[Ionization energy|Template:Engvar energies]]
  • 1st: 684.3 kJ/mol
  • 2nd: 1560 kJ/mol
  • 3rd: 2618 kJ/mol
Atomic radiusempirical: 139 pm
Covalent radius154±5 pm
Template:Infobox element/spectral lines
Other properties
Crystal structure ​Template:Infobox element/crystal structure
Speed of sound thin rod5400 m/s (at r.t.)
Thermal expansion4.8 µm/(m·K) (at 25 °C)
Thermal conductivity138 W/(m·K)
Thermal diffusivity54.3 mm2/s (at 300 K)[1]
Electrical resistivity53.4 nΩ·m (at 20 °C)
Magnetic orderingparamagnetic[2]
Magnetic susceptibility+89.0·10−6 cm3/mol (298 K)[3]
Young's modulus329 GPa
Shear modulus126 GPa
Bulk modulus230 GPa
Poisson ratio0.31
Mohs hardness5.5
Vickers hardness1400–2740 MPa
Brinell hardness1370–2500 MPa
CAS Number7439-98-7
History
DiscoveryCarl Wilhelm Scheele (1778)
First isolationPeter Jacob Hjelm (1781)
Main isotopes of molybdenum
Template:Infobox element/isotopes table
| references

Template:Infobox element/element navigation Template:Template reference list Expression error: Unrecognized word "template".

  1. ↑ Lindemann, A.; Blumm, J. (2009). Measurement of the Thermophysical Properties of Pure Molybdenum. 3. 17th Plansee Seminar.
  2. ↑ Lide, D. R., ed. (2005). "Magnetic susceptibility of the elements and inorganic compounds". CRC Handbook of Chemistry and Physics (PDF) (86th ed.). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5.
  3. ↑ Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4.
  4. ↑ "Molybdenum: molybdenum(I) fluoride compound data". OpenMOPAC.net. Retrieved 2007-12-10.
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