fluorine

How To Use fluorine In A Sentence

• Fluids, immiscible droplets of metal sulphides, and elements like boron and fluorine are concentrated in the remaining melt.
• Feldspar has been hydrothermally altered by a fluorine-rich water vapor to quartz, mica (usually lithian), topaz and/or tourmaline with fluorite, cassiterite, molybdenite, rutile, and wolframite as typical accessory minerals.
• The halogens are a group of chemical elements that includes fluorine, chlorine, bromine, iodine, and astatine.
• This was a development of the mysterious attraction which weak light appearing in darkness had had for him since his boyhood, when he had, with his school fellows, warmed fluorine crystals to make them luminescent; and now he took up, with the astronomer W. Wolf, the study of the luminosity of pyrogallic acid when it is mixed with alkali and bisulphite for developing photographs. Philipp Lenard - Biography
• The ozone depleting compounds contain combinations of the elements chlorine, fluorine, bromine, carbon and hydrogen.
• The name fluorine comes from the mineral fluorspar, or calcium fluoride, in which it was found.
• This process also breaks off bits of the fluorine from the cryolite, which escapes the smelter in the form of perfluorocarbons PFCs—these are the most noxious of greenhouse gases, trapping thousands of times more heat than carbon dioxide. THE STORY OF STUFF
• In the stratosphere, the source gases are converted through photolysis and reaction with the hydroxyl radical to inorganic species of bromine, chlorine, and fluorine. Factors affecting arctic ozone variability in the Arctic
• Even after evacuation, long-term inhalation of ash and exposure to fluorine may result in reduced productivity. Volcanic Ash—Effects on Agriculture and Mitigation Strategies
• Dry chlorine, iodine, bromine and fluorine cause little or no corrosion of magnesium at room or slightly elevated temperature.