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| name |
Hydrogen |
| latin |
Hydrogenium |
| french |
Hydrogéne |
| german |
Wasserstoff |
| symbol |
H |
| proton number |
1 |
| atomic weight |
1.00794 |
| Pauling electronegativity |
2.2 |
| electronic configuration |
1s1 |
| melting point |
14.01 K, -259.14°C, -434.45°F |
| boiling point |
20.28 K, -252.87°C, -423.17°F |
| group |
1 |
| period |
1 |
| state (by 20°C) |
gas |
| oxidation states |
-1, +1 |
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Discoverer
| Year of discovery |
Discoverer |
| 1766 |
Henry Cavendish (1731-1810) |
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Czech version