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