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| name |
Zirconium |
| latin |
Zirkonium |
| french |
Zirconium |
| german |
Zirkonium |
| symbol |
Zr |
| proton number |
40 |
| atomic weight |
91.224 |
| Pauling electronegativity |
1.33 |
| electronic configuration |
[Kr] 4d25s2
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| melting point |
2128 K, 1855°C, 3371°F |
| boiling point |
4682 K, 4409°C, 7968°F |
| group |
4 |
| period |
5 |
| state (by 20°C) |
solid |
| oxidation states |
+4 |
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discussion board
(5)
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Discoverer
| Year of discovery |
Discoverer |
| 1789 |
Martin H. Klaproth (1743-1817) |
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Czech version