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W   -   Tungsten (74/183.85)

Material List
  • Naturally occurring isotopes: 184 186 182 183 180
  • Density: 19.35 (293.15K) g/cm3
  • Melting point: 3410 ± 20 oC
  • Boiling point: 5660 oC
  • Latent heat of fusion: 191.7 J/g
  • Specific heat: 0.125 J/g/K (at room temp.)
  • Coefficient of lineal thermal expansion: 4.60E-06 cm/cm/K (at room temp.)
  • Thermal conductivity: 1.73E+00 W/cm/K (at room temp.)
  • Electrical resistivity: 5.65E-06 hm-cm (at room temp.)
  • lonization potential (1st): 7.98 eV
  • Electronic work function Φ: 4.55
  • Oxidation potentials: W + 3H2O → WO3 + 6H+ + 6e = 0.09 V
  • Chemical valence: 2 3 4 5 6
  • Electrochemical equivalents: 1.1432 g/amp-hr
  • lonic radius: 0.62 (W6+) angstrom
  • Valence electron potential: 140 -eV
  • Principal quantum number: 6
  • Principal electron shells: K L M N O P
  • Electronic configuration: 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d4
  • Valence electrons: 5d4 6s2
  • Crystal form: BCC(alpha) FCC(beta)
  • Half life:
  • Cross section σ: 18.5 ± 0.5 barns
  • Vapor pressure: Pa (at melting point)