The toxic gas, fluorine, is the most reactive element. It was discovered by Karl Scheele in 1771 but not isolated until 1886 when Henri Moissan electrolysed potassium fluoride with some very sophisitcated and expensive equipment. Our students determine fluoride ion concentration in tap water using a selective ion electrode. The oxide is a strong acid.
Crystal are cubic.
Click mass number for decay process, product for element page. Ne-24 25.012098 MASS abund. This is not a publication of Phoenix College.