The formula for fluorine gas is F2. Yellow in color, fluorine is a halogen that has an atomic number of 9. While its boiling point is -188.11 degrees Celsius, the melting point is -219.67 degrees Celsius.
Fluorine is a highly reactive and very corrosive element. It can form reactions with both organic and inorganic substances.
Discovered by Henri Moissan in 1886, fluorine is found in minerals, such as fluorite and cryolite. It also is found in the earth’s crust. Fluorine and its compounds are used in many applications, including in rocket fuel, uranium purification, refrigeration systems and etching solutions. It is also added to water and toothpaste.