| 145 Atomic Weight | |
| 61 Atomic Number | 3 Oxidation States |
| 3273 Boiling Point, K | |
| 1315 Melting Point, K | Pm Symbol |
| 7.22 Density at 300K | |
| [Xe] 4f5 6s2
Electron Configuration | |
| Promethium | |
| Pm Symbol | hcp Crystal Structure |
| 1.63 Covalent Radius | 1.13 Electronegativity |
| 22.4 Atomic Volume | |
| 5.55 Ionization Potential | 2 Electrical Conductivity |
| 17.9 Thermal Conductivity |