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

Cr


in WebElements
in X-Ray info 		Cr, 24
chromium (English)
chrome, m. (French)
Chrom, n. (German)
khrom (Russian)
krom (Swedish)

Symbol, numberCr, 24 (metal), Group: 6; 6B
Weight51.9961
In Nature
Discovered1780, by N.L. Vauquelin (France)
Density  [kg/m3]7190 [293 K] (solid)   6460 [2130 K] (liquid)   
Molar volume7.23 cm3
Melting Temperature2130 K   (1857 °C)   Enthalpy: 348.78 kJ/mol
Boiling Temperature2945 K   (2672 °C)   Enthalpy: 15.3 kJ/mol
Electrical resistance12.7E-8 [273 K] Wm
ThermalConductivity: 93.7 [300 K] W/Km     Expansion: 6.2E-6 /K
Configuration1s2 2s2p6 3s2p6d5 4s1
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
Cr