Fluorine
Fluorine is the chemical element with the symbol F and atomic number 9. Atomic fluorine is univalent and is the most chemically reactive and electronegative of all the elements. In its elementally isolated (pure) form, fluorine is a poisonous, pale, yellowish brown gas, with chemical formula F2. Like other halogens, molecular fluorine is highly dangerous; it causes severe chemical burns on contact with skin.
| Atomic number: | 9 |
| Symbol: | F |
| Atomic weight: | 18.9984 |
| Boiling Point (C): | -188.2 |
| Melting Point (C): | -219.6 |
| Density: | 1.505 |
| heatVapor: | .755 |
| heatFusion: | 0.061 |
| Electrical Conductivity: | -- |
| Thermal Conductivity: | -- |
| Specific Heat Capacity: | .18 |
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