Symbol Cr Atomic radius: pm 125 Fusion: kJ/Mole 21.0
Name Chromium Ionic radius: pm (+3)62 Boiling point: C 2671
Atomic number 24 Electron affinity 0.67 Melting point: C 1907
Atomic weight 52.00 1st  ion potential 6.77 Specific Heat Cap: J/(g K) 0.45
Classification Trans metal Natural form Solid Thermal Cond: W/(cm K) 0.94
Configuration [Ar]3d54s1 Crystal structure BCC Electrical Cond 0.0774
Oxidation states 6,3,2 Density 7.15 Abundance: mg/kg-crust 102
Electronegativity 1.66 Vaporization: kJ/Mole 348.8    
Chromium was discovered in 1797 by the French chemist, Louis-Nicolas Vauquelin, and isolated as the metal a year later. Uses - paint, steel, plating, tanning leather