Cobalt

Co Cobalt Transition Metal

 

Atomic number:  27 Atomic weight:  58.93320
Shells:  2,8,15,2 Orbitals:  [Ar] 3d7 4s2
Melting point:  1495°C Boiling point:  2927°C
Covalent radius:  1.16 Å Atomic volume:  6.7 cm³/mol
Atomic radius:  1.67 Å Ionic radius:  .65 (+2) Å
Electronegativity:  1.88 Oxidation states:  (2),3
1st ionization pot.:  7.8810 V 2nd ionization pot.:  17.06 V
3rd ionization pot.:  33.50 V Specific heat:  0.42 J/gK
Heat of fusion:  16.190 kJ/mol Heat of vapor.:  376.50 kJ/mol
Thermal conduct.:  1.00 W/cmK Electrical conduct.:  0.172 10^6/cm ohm
Density:  8.90 g/cm³ Valence:  2,3