Kobalt |
| Simbool | Co |
|---|---|
| Latynse naam | Cobaltum |
| Atoomgetal | 27 |
| Periode | 4 |
| Element kategorie | Oorgangselemente |
| Relatieve atomiese massa | 58.93320 |
| Groep | VIII.B |
| Electronegativiteit | 1.8 |
| Oksidering nommers | 2, 3 |
| Elektronkonfigurasie | 1s2 2s2 2p6 3s2 3p6 3d7 4s2 |
| Digtheid [g/cm3] | 8.9 |
| Staat | Vaste stof |
| Smeltpunt [°C] | 1494 |
| Kookpunt [°C] | 2900 |
| Atoomradius [pm] | 152 |
| Covalent radius [pm] | 126 |
| Termiese geleidingsvermoë [W m-1K-1] | 100 |
| Hitte kapasiteit [J K-1g-1] | 0.421 |
| Ontdekking | 1735 |
| Hardheid [Mohs-skaal] | 5.5 |
| Vickers se hardheid [MPa] | 1043 |
| Brinell-hardheid [MPa] | 700 |
| Young's modulus [GPa] | 209 |
| Elektriese geleiding [S m-1] | 1.7 · 107 |
| Shear modulus [GPa] | 75 |
| 1ste ionisasie-energie [eV] | 7.881 |
| 2de ionisasie-energie [eV] | 17.06 |
| 3de ionisasie-energie [eV] | 33.5 |
| Stabiele isotope | 1 |
| Onstabiele isotope | 13 |