Np93 – Neptunium
- Atomic Number: 93
- Atomic Symbol: Np
- Atomic Name: Neptunium
- Atomic Mass: 237.048172
- CPK Hex Color: 0080FF
- Electron Configuration: [Rn]7s2 5f4 6d1
- Electron Negativity: 1.36
- Atomic Radius: 221
- Ionization Energy: 6.266
- Electron Affinity:
- Oxidation States: +6, +5, +4, +3
- Standard State: Solid
- Melting Point: 917
- Boiling Point: 4175
- Density: 20.25
- Group Block: Actinide
- Year Discovered: 1940
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