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 |
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| name |
Technetium |
| latin |
Technetium |
| french |
Technétium |
| german |
Technetium |
| symbol |
Tc |
| proton number |
43 |
| atomic weight |
[98] |
| Pauling electronegativity |
1.9 |
| electronic configuration |
[Kr] 4d55s2
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| melting point |
2430 K, 2157°C, 3914°F |
| boiling point |
4538 K, 4265°C, 7709°F |
| group |
7 |
| period |
5 |
| state (by 20°C) |
solid |
| oxidation states |
+7 |
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printable version
discussion board
(4)
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Discoverer
| Year of discovery |
Discoverers |
| 1937 |
Carlo Perrier
Emilio G. Segre (1905-1989) |
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Czech version