November 19, 2012 Fiza_Khan 12439 reads 44 comments. Aamir Khan is Bollwood's perfectionist, the 'thinking' actor, the socially-responsible celebrity and the star with a concern for humanity. He is recently in the news for his upcoming film 'Talaash' with Rani Mukherji and Kareena Kapoor.
Fluorine: the essentials. Fluorine is a Group 17 element. Fluorine is the most electronegative and reactive of all elements. It is a pale yellow, corrosive gas, which reacts with practically all organic and inorganic substances.Finely divided metals, glass, ceramics, carbon, and even water burn in fluorine with a bright flame.luorine as fluoride (F -) is probably an essential element for humans and certainly is for some molluscs. In some areas, fluoride ion is added to drinking water (in very low concentrations) since it renders tooth enamel relatively immune to bacteriological attack.
Fluorocarbons, sometimes referred to as perfluorocarbons or PFCs, are, strictly speaking, organofluorine compounds with the formula C x F y, i.e. they contain only carbon and fluorine, though the terminology is not strictly followed.rior to that, fluorocarbons were prepared by reaction of fluorine with the hydrocarbon, i.e., direct fluorination. Because C-C bonds are readily cleaved by fluorine, direct fluorination mainly affords smaller perfluorocarbons, such as tetrafluoromethane, hexafluoroethane, and octafluoropropane.