(L. and F. fluere,flow, or flux) Isolates by Moisson in 1886. Most electronegative and reactive of all elements. During and after Word War II, the atom bomb project and nuclear energy required production of fluorine. Fluorine combines with rare gases including xenon,radon and krypton.
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halogen,most reactive,pale yellow gas at room temp.,safe handling techniques are essential,element and compounds are highly toxic, element has a pungent odor.
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hydrofluoric acid is used for etching glass light bulbs,fluorochlorocarbons used in refrigeration and air conditioning,in small amounts fluorides in water sources prevent tooth decay.