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La   -   Lanthanum (57/138.906)

Material List
(Th,La)O2 (8) (U,La)O2 (4) Ce,La,Al (5) La (8)
La,Cu (2) La2O3 (4) LaAl3 (1) LaCrO3,Cr (8)
LaNi5 (1) LaNi5Hx (2) LaRu2 (2) LaSn3 (2)
NaCl,PuCl3,LaCl3 (3) UO2,La2O3 (6)
14 material, 56 document(s) are retrieved.
  • Naturally occurring isotopes: 139 138
  • Density: 6.145 (298.15K) g/cm3
  • Melting point: 921 oC
  • Boiling point: 3457 oC
  • Latent heat of fusion: 81.4 J/g
  • Specific heat: 0.195 J/g/K (at room temp.)
  • Coefficient of lineal thermal expansion: 5.20E-06 cm/cm/K (at room temp.)
  • Thermal conductivity: 1.34E-01 W/cm/K (at room temp.)
  • Electrical resistivity: 5.60E-05 hm-cm (at room temp.)
  • lonization potential (1st): 5.577 eV
  • Electronic work function Φ: 3.5
  • Oxidation potentials: La → La3+ + 3e = 2.522 V
  • Chemical valence: 3
  • Electrochemical equivalents: 1.7275 g/amp-hr
  • lonic radius: 1.061 angstrom
  • Valence electron potential: 40.71 -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 5s2 5p6 5d1 6s2
  • Valence electrons: 5d1 6s2
  • Crystal form: HCP
  • Half life:
  • Cross section σ: 8.9 ± 0.2 barns
  • Vapor pressure: 1.33E-07 Pa (at melting point)