At85 – Astatine
- Atomic Number: 85
- Atomic Symbol: At
- Atomic Name: Astatine
- Atomic Mass: 209.98715
- CPK Hex Color: 754F45
- Electron Configuration: [Xe]6s2 4f14 5d10 6p5
- Electron Negativity: 2.2
- Atomic Radius: 202
- Ionization Energy: 9.5
- Electron Affinity: 2.8
- Oxidation States: 7, 5, 3, 1, -1
- Standard State: Solid
- Melting Point: 575
- Boiling Point:
- Density: 7
- Group Block: Halogen
- 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