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Ru   -   Ruthenium (44/101.07)

Material List
  • Naturally occurring isotopes: 102 104 101 99 100 96 98
  • Density: 12.45 (293.15K) g/cm3
  • Melting point: 2310 oC
  • Boiling point: 3900 oC
  • Latent heat of fusion: 252.7 J/g
  • Specific heat: 0.238 J/g/K (at room temp.)
  • Coefficient of lineal thermal expansion: 9.91E-06 cm/cm/K (at room temp.)
  • Thermal conductivity: 1.17E+00 W/cm/K (at room temp.)
  • Electrical resistivity: 6.80E-06 hm-cm (at room temp.)
  • lonization potential (1st): 7.37 eV
  • Electronic work function Φ: 4.71
  • Oxidation potentials: Ru + 5Cl- → RuCl3 2- + 3e = -0.601 V
  • Chemical valence: 1 2 3 4 5 6 7 8
  • Electrochemical equivalents: 1.257 g/amp-hr
  • lonic radius: 0.68 angstrom
  • Valence electron potential: 64 -eV
  • Principal quantum number: 5
  • Principal electron shells: K L M N O
  • Electronic configuration: 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d7 5s1
  • Valence electrons: 4d7 5s1
  • Crystal form: HCP
  • Half life:
  • Cross section σ: 3.0 ± 0.8 barns
  • Vapor pressure: 1.40E+01 Pa (at melting point)