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Pm
Promethium
#61 · Lanthanide
| Mass | 145.0 u |
| Density | 7.26 g/cm³ |
| Melting | 1315.0 K |
| Boiling | 3273.0 K |
| Electronegativity | 1.13 |
| Ionization Energy | 540.0 kJ/mol |
| Atomic Radius | 183.0 pm |
| Block | f-block |
| State (RT) | Solid |
| Config | [Xe] 4f5 6s2 |