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Er   -   Erbium (68/167.26)

Material List
  • Naturally occurring isotopes: 166 168 167 170 164 162
  • Density: 9.066 (298.15K) g/cm3
  • Melting point: 1529 oC
  • Boiling point: 2863 oC
  • Latent heat of fusion: 102.6 J/g
  • Specific heat: 0.168 J/g/K (at room temp.)
  • Coefficient of lineal thermal expansion: 9.20E-06 cm/cm/K (at room temp.)
  • Thermal conductivity: 1.45E-01 W/cm/K (at room temp.)
  • Electrical resistivity: 1.07E-04 hm-cm (at room temp.)
  • lonization potential (1st): 6.1 eV
  • Electronic work function Φ:
  • Oxidation potentials: Er → Er3+ + 3e = 2.296 V
  • Chemical valence: 3
  • Electrochemical equivalents: 2.0802 g/amp-hr
  • lonic radius: 0.881 angstrom
  • Valence electron potential: 49 -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 4f12 5s2 5p6 6s2
  • Valence electrons: 4f12 6s2
  • Crystal form: HCP
  • Half life:
  • Cross section σ: 160 ± 30 barns
  • Vapor pressure: Pa (at melting point)