| Ordnungszahl: |
9 |
| Name: |
Fluorine |
| Namensursprung: |
Latin: fluere (flow). |
| Entdeckung: |
1886 by Henri Moissan in France |
| Beschreibung: |
Greenish-yellow, pungent, corrosive gas. Extremely reactive. Does not occur uncombined in nature. |
| Vorkommen: |
Found in the minerals fluorite (CaF2) and cryolite(Na3AlF6). Electrolysis of hydrofluoric acid (HF) or potassium acid fluoride (KHF2) is the only practical method of commercial production. |
| Verwendung: |
Used in refrigerants and other fluorocarbons. Also in toothpaste as sodium fluoride (NaF) and stannous fluoride (SnF2); also in Teflon. |
| Gruppe: |
Halogen |
| Atomgewicht: |
18.9984032 |
| Schmelzpunkt: |
-219.62°C |
| Siedepunkt: |
-188.14°C |
| Dichte bei 293 K: |
0.001696 g/cm³ |
| Aggregatszustand bei Raumtemperatur: |
Gas |
| Schalen: |
2,7 |
| Orbitale: |
[He] 2s2 2p5 |
| Valenzen: |
1 |
| 1. Ionisierungs- potential: |
17.4228 V |
| 2. Ionisierungs- potential: |
34.97 V |
| 3. Ionisierungs- potential: |
62.707 V |
| Atomradius: |
0.57 Å |
| Spezifische Wärme: |
0.82 J/gK |
| Verdampfungswärme: |
3.2698 kJ/mol |
| Schmelzwärme: |
0.2552 kJ/mol |
| Thermischer Ausdehnungskoeffizient: |
1800 10-6 K-1 |
| Röntgenemission Energie / Wellenlänge: |
| |
KA |
KB |
LA |
LB |
MA |
MB |
|
|
|
| eV |
676.777 |
0 |
0 |
0 |
0 |
0 |
|
|
|
| Å |
18.32 |
0 |
0 |
0 |
0 |
0 |
|
|
|
|
| Röntgenabsorption Energie / Wellenlänge: |
| |
K |
L-I |
L-II |
L-III |
M-I |
M-II |
M-III |
M-IV |
M-V |
| eV |
687 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| Å |
18.0474 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
| Röntgen Fluoreszenz Ausbeute: |
| |
KA |
KB |
LA |
LB |
MA |
MB |
|
|
|
| |
0.9% |
0% |
0% |
0% |
0% |
0% |
|
|
|
|
| Nuklide: |
| |
Anteil |
Gewicht |
Spin |
Halbwertszeit |
Zerfallsmodus |
| F18 |
0% |
18 |
1 |
1.830h |
β+,EC |
| F19 |
100% |
18.9984 |
1/2 |
|
Stable |
|
