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name |
Promethium |
latin |
Promethium |
french |
Prométhium |
german |
Promethium |
symbol |
Pm |
proton number |
61 |
atomic weight |
[145] |
Pauling electronegativity |
- |
electronic configuration |
[Xe] 4f55d06s2 >> show long |
melting point |
1373 K, 1100°C, 2012°F |
boiling point |
3273 K, 3000°C, 5432°F |
group |
- |
period |
6 |
state (by 20°C) |
solid |
oxidation states |
+3 |
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Discoverer
Year of discovery |
Discoverers |
1945 |
Jacob A. Marinsky Lawrence E. Glendenin Charles D. Coryell |
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