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.
As the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine.Among the elements, fluorine ranks 24th in universal abundance and 13th in terrestrial abundance.luorine has two solid forms, Î±- and Î²-fluorine. The latter crystallizes at â220 Â°C (â364 Â°F) and is transparent and soft, with the same disordered cubic structure of freshly crystallized solid oxygen, unlike the orthorhombic systems of other solid halogens.