![]() Even so, HF is safer and easier to transport and handle than pure fluorine. Hydrofluoric acid (HF), for example, is so corrosive it will dissolve glass. Because it is so reactive, fluorine is difficult to store.While fluorine compounds are not found in animals, there are natural organofluorines in plants, which typically act as defenses against herbivores. Trace dietary fluorine levels may impact bone strength. ![]() Topical fluoride application, as from toothpaste or mouthwash, was once believed to be effective for the conversion of tooth enamel hydroxyapatite into stronger fluorapatite, but more recent studies indicate fluoride aids enamel regrowth. Fluorine is not an essential element in human or animal nutrition. It is used in refrigerants (chlorofluorocarbons or CFCs), propellants, and for the enrichment of uranium by UF 6 gas. It is found as fluoride in toothpaste and drinking water, in Teflon (polytetrafluoroethylene), drugs including the chemotherapeutic drug 5-fluorouracil, and etchant hydrofluoric acid. The element is found in minerals, including fluorite, topaz, and feldspar. It is so reactive that it is not found naturally in pure form but only in compounds. The 13th most abundant element in the Earth's crust is fluorine.Moisson was also the first person to make artificial diamonds, by compressing charcoal. He also used electrolysis to obtain the element but kept the fluorine gas separate from the hydrogen gas. Although he was the first to successfully obtain pure fluorine, Moisson's work was interrupted multiple times when he was poisoned by the reactive element. George Gore managed to isolate fluorine using an electrolytic process in 1869, but the experiment ended in disaster when fluorine reacted explosively with hydrogen gas. Henri Moisson was awarded the 1906 Nobel Memorial Prize in Chemistry for isolating fluorine in 1886. ![]() ![]() Its standard atomic weight is 18.9984 and is based on its single natural isotope, fluorine-19.
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