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Pr   -   Praseodymium (59/140.908)

Material List
  • Naturally occurring isotopes: 141
  • Density: 6.773 (298.15K) g/cm3
  • Melting point: 931 oC
  • Boiling point: 3512 oC
  • Latent heat of fusion: 71.3 J/g
  • Specific heat: 0.193 J/g/K (at room temp.)
  • Coefficient of lineal thermal expansion: 6.50E-06 cm/cm/K (at room temp.)
  • Thermal conductivity: 1.25E-01 W/cm/K (at room temp.)
  • Electrical resistivity: 6.80E-05 hm-cm (at room temp.)
  • lonization potential (1st): 5.42 eV
  • Electronic work function Φ: 2.7
  • Oxidation potentials: Pr → Pr3+ + 3e = 2.462 V
  • Chemical valence: 3 4
  • Electrochemical equivalents: 1.7524 g/amp-hr
  • lonic radius: 1.013 angstrom
  • Valence electron potential: 42.64 -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 4f3 5s2 5p6 6s2
  • Valence electrons: 4f3 6s2
  • Crystal form: HCP
  • Half life:
  • Cross section σ: 3.9 ± 0.5 barns
  • Vapor pressure: Pa (at melting point)