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Tl
Thallium
#81 · Post-Transition Metal
| Mass | 204.38 u |
| Density | 11.85 g/cm³ |
| Melting | 577.0 K |
| Boiling | 1746.0 K |
| Electronegativity | 1.62 |
| Ionization Energy | 589.4 kJ/mol |
| Atomic Radius | 170.0 pm |
| Block | p-block |
| State (RT) | Solid |
| Config | [Xe] 4f14 5d10 6s2 6p1 |