Pr
Praseodymium
Element 59 · Lanthanide · Period 6, Group 5
Solid · Discovered 1885
Atomic Properties
| Atomic Number | 59 |
| Atomic Mass | 140.90766u |
| Electron Configuration | [Xe]6s2 4f3 |
| Electronegativity | 1.13Pauling |
| Atomic Radius | 239pm |
| Ionization Energy | 5.464eV |
| Oxidation States | +3 |
Physical Properties
| Standard State | Solid |
| Melting Point | 1204K |
| Boiling Point | 3793K |
| Density | 6.77g/cm³ |
| Group Block | Lanthanide |
| Year Discovered | 1885 |