The periodic Table
coloured by Discovery
coloured by States
Constants, Astronomy
Constants, Physics
SI Units
by Peder Axensten

Co


in WebElements
in X-Ray info 		Co, 27
cobalt (English)
cobalt, m. (French)
Kobalt, n. (German)
kobal't (Russian)
kobolt (Swedish)

Symbol, numberCo, 27 (metal), Group: 9; 8B
Weight58.93320
In Nature
Discovered1735, by Georg Brandt (Sweden)
Density  [kg/m3]8900 [293 K] (solid)   7670 [1768K] (liquid)   
Molar volume6.62 cm3
Melting Temperature1768 K   (1495 °C)   Enthalpy: 382.4 kJ/mol
Boiling Temperature3143 K   (2870 °C)   Enthalpy: 15.2 kJ/mol
Electrical resistance6.24E-8 [293 K] Wm
ThermalConductivity: 100 [300 K] W/Km     Expansion: 13.36E-6 /K
Configuration1s2 2s2p6 3s2p6d7 4s2
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
Co