| Praseodymium ✕ | |
|---|---|
| Symbol | Pr |
| Atomic number | 59 |
| Chemical property | Lanthanide |
| Origin o the name | the Greek praseios didymos meaning 'green twin' |
| Period | 6 |
| Atomic weight (u) | 140.90766 |
| Atomic weight uncertainty (u) | 0.00002 |
| Density (g/cm³) | 6.773 |
| Melting point (K) | 1208 |
| Boiling point (K) | 3793 |
| Heat capacity (J/(g·K)) | 0.193 |
| Electro-negativity | 1.13 |
| Abundance in earth's crust (mg/kg) | 9.2 |