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Selén
SelénStiahnite si aplikáciu Chemistry a zobrazte viac informácií o chemickom prvku:
| Atómové číslo | 34 |
| Skupina | VIA |
| Perióda | 4 |
| Hmotnosť | 78.96 |
| Latinský názov | Selenium |
| Elektrónová konfigurácia | [Ar]3d10 4s2 4p4 |
| Oxidačné číslo | -2, -1, 0, 1, 2, 3, 4, 5, 6 |