By: Deanna Costabile


It was discovered by Henri Moissan and in the year 1886. The name fluorine comes from the Latin 'Fluere', meaning to flow.

Physical Properties

Fluorine is the most electronegative and reactive of all elements. It is a pale yellow, corrosive gas, that reacts with practically all organic and inorganic substances. Elemental fluorine is highly toxic. It has a pungent odor.

Chemical Properties

It is highly reactive. It is so reactive that glass, metals, and even water, as well as other substances, burn with a bright flame in a jet of fluorine gas. It reacts with all elements but  helium, neon, and argon. It is a corrosive gas and it is a flammable gas.

Where It's Mainly Found

The main mining areas for fluorite are China, Mexico and Western Europe.
Fluorine occurs naturally in the earth's crust where it can be found in rocks, coal and clay. Fluorides are released into the air in wind-blown soil.


Fluorine wasn't used until the Second World War, when the development of the atomic bomb, and other nuclear energy projects, made it necessary to make large quantities of it. Before that, fluorine salt, known as fluoride was used in welding and for frosting glass. CFC's (chloro-fluoro-carbons) were used as aerosol propellants,refrigerants, and for expanded polystyrene. Now it is banned because of the fact it destroyed our ozone layer. Fluoride is an essential ion for animals, strengthening teeth and bones. Sometimes it is used in drinking water to prevent cavities. Fluoride is also added to toothpaste to also prevent cavities.

Important Facts

      It's boiling point is 85.03 k and it's melting point is 53.48 k. It's boiling point in Celsius is -188.11 oC and it's melting point in Celsius is -219.67 oC. It's also a halogen. Atomic Number is 9. It has 9 protons. Its Atomic Mass is 19. It has 10 neutrons. It has 9 electrons. It is a Gas at 20°C. It is a neutral atom but when excited it has net charge of -1.

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