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Fr   -   Francium (87/223.02)

Material List
Currently compound materials are not available.
  • Naturally occurring isotopes: None (actinium decay product)
  • Density: g/cm3
  • Melting point: 27 (est) oC
  • Boiling point: 677 (est) oC
  • Latent heat of fusion: 9.39 J/g
  • Specific heat: J/g/K (at room temp.)
  • Coefficient of lineal thermal expansion: cm/cm/K (at room temp.)
  • Thermal conductivity: W/cm/K (at room temp.)
  • Electrical resistivity: hm-cm (at room temp.)
  • lonization potential (1st): 3.83 eV
  • Electronic work function Φ:
  • Oxidation potentials: V
  • Chemical valence: 1
  • Electrochemical equivalents: 8.3209 g/amp-hr
  • lonic radius: 1.8 (Fr+) angstrom
  • Valence electron potential: 8 -eV
  • Principal quantum number: 7
  • Principal electron shells: K L M N O P Q
  • Electronic configuration: 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 6s2 6p6 7s1
  • Valence electrons: 7s1
  • Crystal form: BCC
  • Half life: 22 minutes
  • Cross section σ: barns
  • Vapor pressure: Pa (at melting point)