Pm61 – Promethium
- Atomic Number61
- Atomic SymbolPm
- Atomic NamePromethium
- Atomic Mass144.91276
- CPK Hex ColorA3FFC7
- Electron Configuration[Xe]6s2 4f5
- Electron Negativity
- Atomic Radius236
- Ionization Energy5.55
- Electron Affinity
- Oxidation States3
- Standard StateSolid
- Melting Point1315
- Boiling Point3273
- Density7.26
- Group BlockLanthanide
- Year Discovered1945
Periodic Table of Elements. (2022, December 23). In PubChem and the National Library of Medicine. https://pubchem.ncbi.nlm.nih.gov/periodic-table/#view=table