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.
Definition of fluoride for English Language Learners. : a chemical that is sometimes added to drinking water and toothpaste to help keep teeth healthy.