Se34 – Selenium
- Atomic Number34
- Atomic SymbolSe
- Atomic NameSelenium
- Atomic Mass78.97
- CPK Hex ColorFFA100
- Electron Configuration[Ar]4s2 3d10 4p4
- Electron Negativity2.55
- Atomic Radius190
- Ionization Energy9.752
- Electron Affinity2.021
- Oxidation States+6, +4, -2
- Standard StateSolid
- Melting Point493.65
- Boiling Point958
- Density4.809
- Group BlockNonmetal
- Year Discovered1817
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