| Property | Value |
|---|---|
| Atoomnummer | 94 |
| Atoomgewicht | 244.0642 amu |
| Element family | Actinoids |
| Elektronische configuratie | 1s2 |
| Stable and very long lived isotopes | Geen |
| Previous element | Neptunium |
| Next element | Americium |
| Dichtheid | 19.84 g/cm3 (STP) |
| Smelten | 640 °C |
| Kookpunt | 3327 °C |
| Covalente straal | 1.72 Å |
| Ionstraal | 0.887 Å |
| Metalic radius | 1.59 Å |
| Eerst ionisatiepotentiaal | 6.060 eV |
| Elektronenaffiniteit | -0.500 eV |
| Electronegativity | 1.28 |
| Discovery year | 1940 |
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