Tl81 – Thallium
- Atomic Number: 81
- Atomic Symbol: Tl
- Atomic Name: Thallium
- Atomic Mass: 204.383
- CPK Hex Color: A6544D
- Electron Configuration: [Xe]6s2 4f14 5d10 6p1
- Electron Negativity: 1.62
- Atomic Radius: 196
- Ionization Energy: 6.108
- Electron Affinity: 0.2
- Oxidation States: +3, +1
- Standard State: Solid
- Melting Point: 577
- Boiling Point: 1746
- Density: 11.8
- Group Block: Post-transition metal
- Year Discovered: 1861
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