| Property | Value |
|---|---|
| Atoomnummer | 97 |
| Atoomgewicht | 247.0703 amu |
| Element family | Actinoids |
| Elektronische configuratie | 1s2 |
| Stable and very long lived isotopes | Geen |
| Previous element | Curium |
| Next element | Californium |
| Dichtheid | 14.79 g/cm3 (STP) |
| Smelten | 986 °C |
| Kookpunt | 2627 °C |
| Ionstraal | 0.949 Å |
| Metalic radius | 1.7 Å |
| Eerst ionisatiepotentiaal | 6.229 eV |
| Elektronenaffiniteit | -1.720 eV |
| Electronegativity | 1.3 |
| Discovery year | 1949 |
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