F
Element Nr. 9
Fluorine
halogen
gas
Entdeckt 1886
18.998
Atomgewicht (u)
-219.67 °C
Schmelzpunkt
-188.11 °C
Siedepunkt
0.001553 g/cm3
Dichte
3.98
Elektronegativität
[He] 2s2 2p5
Elektronenkonfiguration
2
Periode
17
Gruppe
📖 Über Fluorine
The most electronegative and reactive of all elements. It reacts violently with almost every substance including many noble gases. Fluorine is so reactive it corrodes glass. Uranium hexafluoride (UF6), used in uranium enrichment, relies on fluorine. Teflon (PTFE) is a fluorocarbon polymer prized precisely because the C-F bond is so strong nothing reacts with it.
🔧 Verwendungen und Anwendungen
- Uranium enrichment (as UF6 gas)
- Non-stick coatings (Teflon/PTFE)
- Toothpaste (fluoride prevents tooth decay)
- Refrigerants (HFCs)
- Semiconductors etching
💡 Wusstest du?
Fakt: Fluorine killed or injured many chemists before Henri Moissan finally isolated it in 1886, winning the Nobel Prize. It had been called the "fiend element" due to the difficulty and danger of working with it.