The periodic Table
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by Peder Axensten

Os


in WebElements
in X-Ray info 		Os, 76
osmium (English)
osmium, m. (French)
Osmium, n. (German)
osmij (Russian)
osmium (Swedish)

Symbol, numberOs, 76 (metal), Group: 8; 8B
Weight190.2
In Nature
Discovered1803, by Smithson Tennant (England)
Density  [kg/m3]22590 [293 K] (solid)   20100 [3327 K] (liquid)   
Molar volume8.43 cm3
Melting Temperature3327 K   (3054 °C)   Enthalpy: 627.6 kJ/mol
Boiling Temperature5300 K   (5027 °C)   Enthalpy: 29.3 kJ/mol
Electrical resistance8.12E-8 [273 K] Wm
ThermalConductivity: 87.6 [300 K] W/Km     Expansion: 4.3E-6 (a), 6.1E-6 (b), 6.8E-6 (c) /K
Ionisation [kJ/mol]
  M-->  M+--> M2+--> M3+--> M4+--> M5+--> M6+--> M7+--> M8+--> M9+-->M10+
Thermodynamics
State DfH° DfG° S° CpH H°298.15-H°0
[kJ/mol] [J/Kmol] [kJ/mol]
Isotopes
Mass In nature Half-life Spin m/mN NMM Decay
Os