Zinc (, from ) is a metallic chemical element with the symbol Zn and atomic number 30. In some historical and sculptural contexts, it is (or was) known as spelter. Notable characteristics Zinc is a moderately reactive, blue gray metal that tarnishes in moist air and burns in air with a bright bluish-green flame, giving off plumes of zinc oxide. It reacts with acids, alkalis and other non-metals. If not completely pure, zinc reacts with dilute acids to release hydrogen. The one common oxidation state of zinc is +2. From 100 °C to 210 °C to zinc metal is malleable and can easily be beaten into various shapes. Above , the metal becomes brittle and will be pulverized by beating. Zinc is nonmagnetic. History In ancient India the production of zinc metal was very common. Many mine sites of Zawar Mines, near Udaipur, Rajasthan;-Zawarmaala were active even during 1300?1000 BC. There are references of medicinal uses of zinc in the Charaka Samhita (300 BC). The Rasaratna Samuccaya (800

Source: http://en.wikipedia.org/wiki/Zinc
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