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 |
|
