Chromium

Cr Chromium Transition Metal

 

Atomic number:  24 Atomic weight:  51.9961
Shells:  2,8,13,1 Orbitals:  [Ar] 3d5 4s1
Melting point:  1857°C Boiling point:  2672°C
Covalent radius:  1.18 Å Atomic volume:  7.23 cm³/mol
Atomic radius:  1.85 Å Ionic radius:  .62 (+3) Å
Electronegativity:  1.66 Oxidation states:  6,(3),2
1st ionization pot.:  6.7666 V 2nd ionization pot.:  16.50 V
3rd ionization pot.:  30.96 V Specific heat:  0.45 J/gK
Heat of fusion:  16.90 kJ/mol Heat of vapor.:  344.30 kJ/mol
Thermal conduct.:  0.937 W/cmK Electrical conduct.:  0.0774 10^6/cm ohm
Density:  7.19 g/cm³ Valence:  2,3,6