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 |
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| name |
Thallium |
| latin |
Thallium |
| french |
Thallium |
| german |
Thallium |
| symbol |
Tl |
| proton number |
81 |
| atomic weight |
204.3833 |
| Pauling electronegativity |
1.62 |
| electronic configuration |
[Xe] 4f145d106s26p1
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| melting point |
577 K, 304°C, 579°F |
| boiling point |
1746 K, 1473°C, 2683°F |
| group |
13 |
| period |
6 |
| state (by 20°C) |
solid |
| oxidation states |
+1, +3 |
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discussion board
(3)
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Discoverer
| Year of discovery |
Discoverer |
| 1861 |
Sir William Crookes (1832-1919) |
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Czech version