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Pm |
Promethium |
Pm | |
Atomic number |
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61 | Atomic weight | 146.9151 amu | Stable and very long lived isotopes | N/A | Electronic configuration | 1s22s22p63s23p63d104s24p64d105s25p66s24f5 | Density |
7.26 g/cm3 (STP) |
Melting | 931 °C |
Boiling | 2730 °C |
Covalent radius | Å |
Van der Waals radius | Å |
Ionic radius | 0.979 Å |
First ionization potential | 5.597 eV = 45140 cm-1 = 540.0 kJ/mol
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Electron affinity | |
Wikipedia article about Promethium |
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