| Property | Value |
|---|---|
| Atoomnummer | 59 |
| Atoomgewicht | 140.907652 amu |
| Element family | N/A |
| Elektronische configuratie | 1s2 |
| Stable and very long lived isotopes | 141Pr: 100% |
| Previous element | Cerium |
| Next element | Neodymium |
| Dichtheid | 6.773 g/cm3 (STP) |
| Smelten | 931 °C |
| Kookpunt | 3212 °C |
| Covalente straal | 1.76 Å |
| Ionstraal | 1.013 Å |
| Metalic radius | 1.824 Å |
| Eerst ionisatiepotentiaal | 5.462 eV |
| Elektronenaffiniteit | 0.109 eV |
| Electronegativity | 1.13 |
| Discovery year | 1885 |
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