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Ca   -   Calcium (20/40.08)

Material List
  • Naturally occurring isotopes: 40 44 42 48 43 46
  • Density: 1.55 (293.15K) g/cm3
  • Melting point: 839 ± 2 oC
  • Boiling point: 1484 oC
  • Latent heat of fusion: 216.2 J/g
  • Specific heat: 0.632 J/g/K (at room temp.)
  • Coefficient of lineal thermal expansion: 2.23E-05 cm/cm/K (at room temp.)
  • Thermal conductivity: 2.01E+00 W/cm/K (at room temp.)
  • Electrical resistivity: 3.91E-06 hm-cm (at room temp.)
  • lonization potential (1st): 6.113 eV
  • Electronic work function Φ: 2.87
  • Oxidation potentials: Ca → Ca2+ + 2e = 2.866 V
  • Chemical valence: 2
  • Electrochemical equivalents: 0.7477 g/amp-hr
  • lonic radius: 0.99 angstrom
  • Valence electron potential: 29 -eV
  • Principal quantum number: 4
  • Principal electron shells: K L M N
  • Electronic configuration: 1s2 2s2 2p6 3s2 3p6 4s2
  • Valence electrons: 4s2
  • Crystal form: FCC
  • Half life:
  • Cross section σ: 0.44 ± 0.02 barns
  • Vapor pressure: 2.54E+02 Pa (at melting point)