Fluorine

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Fluorine
18.9984032(5)



  F
9
1s22s22p5
[ ? ] Halogen:
Properties:
Yellow, corrosive, toxic gas. Very pungent odor. Highly reactive and electronegative.
Uses:
Pharmaceuticals, pesticides, plastics (Teflon).
Hazard:
Highly toxic. Dangerously powerful oxidant.


Fluorine is a chemical element, having the chemical symbol F. Its atomic number (the number of protons) is 9. It has a standard atomic weight of 18.9984032 g•mol −1, and is typically found as a gas in its elemental form.

Fluorine is considered to be a member of the "Halogen" class of element. At a pressure of 101.325 kPa, it has a boiling point of −182.12 °C, and a melting point of −219.67 °C