main category

 

subordinate category

SEARCH


contents

At   -   Astatine (85/209.987)

Material List
Currently compound materials are not available.
  • Naturally occurring isotopes: None
  • Density: g/cm3
  • Melting point: 302 oC
  • Boiling point: 337 (est) oC
  • Latent heat of fusion: 114 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): 9.65 eV
  • Electronic work function Φ:
  • Oxidation potentials: 2At- → At2 + 2e = -0.2 V
  • Chemical valence: 1 3 5 7
  • Electrochemical equivalents: 7.8346 g/amp-hr
  • lonic radius: angstrom
  • Valence electron potential: -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 4f14 5s2 5p6 5d10 6s2 6p5
  • Valence electrons: 6s2 6p5
  • Crystal form:
  • Half life:
  • Cross section σ: barns
  • Vapor pressure: Pa (at melting point)