Np93 – Neptunium
- Atomic Number93
- Atomic SymbolNp
- Atomic NameNeptunium
- Atomic Mass237.048172
- CPK Hex Color0080FF
- Electron Configuration[Rn]7s2 5f4 6d1
- Electron Negativity1.36
- Atomic Radius221
- Ionization Energy6.266
- Electron Affinity
- Oxidation States+6, +5, +4, +3
- Standard StateSolid
- Melting Point917
- Boiling Point4175
- Density20.25
- Group BlockActinide
- Year Discovered1940
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