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FSc Chemistry Book2, CH 4, LEC 19: Occurrence and Allotropes of Phosphorus

http://www.dailymotion.com/video/x2ir1qn

This video lecture from Group VA and Group VIA Elements  (F.Sc. second year Chemistry) covers the occurrence and allotropic forms of phosphorus. Phosphorus exists in combined state in the form of phosphate minerals. The allotropes of phosphorus include white or yellow phosphorus, red phosphorus, black phosphorus, violet phosphorus and diphosphorus. Various characteristics like color, physical properties and appearance is discussed for each allotrope in detail. Find more e-learning material and educational video lectures in Urdu at maktab.pk. These videos are free to use for promotional and commercial purpose by keeping the credits to Maktab.

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