Fluorine is a non-metal, highly reactive element that does not occur naturally in nature. It is instead created through the electrolysis of hydrofluoric acid and potassium fluoride. It is also produced through the electrolysis of molten potassium acid fluoride (KHF2).
Fluorine was first isolated by a French chemist Ferdinand Frederic Henri Moissan in 1886 through the electrolysis of hydrofluoric acid (HF) and potassium fluoride (KF). This resulted in him being awarded the Nobel Prize for chemistry in 1906. Fluorine is used widely in city water supplies and toothpaste to reduce the chance of tooth decay. The name Fluorine is derived from the French and Latin word fluere, which means flow.