Se34 – Selenium
- Atomic Number: 34
- Atomic Symbol: Se
- Atomic Name: Selenium
- Atomic Mass: 78.97
- CPK Hex Color: FFA100
- Electron Configuration: [Ar]4s2 3d10 4p4
- Electron Negativity: 2.55
- Atomic Radius: 190
- Ionization Energy: 9.752
- Electron Affinity: 2.021
- Oxidation States: +6, +4, -2
- Standard State: Solid
- Melting Point: 493.65
- Boiling Point: 958
- Density: 4.809
- Group Block: Nonmetal
- Year Discovered: 1817
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