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Chemical Elements

Zinc

atomic number of zinc, Zinc sulfide, transition elements, galvanizer, antiseptic ointment

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>  Properties and Occurence

Zinc (German zink, “tin”), symbol Zn, bluish-white metallic element that has many industrial applications. Zinc is one of the transition elements of the periodic table. The atomic number of zinc is 30. The ores of zinc have long been known, but zinc was not recognized as a separate element until 1746, when the German chemist Andreas Sigismund Marggraf isolated the pure metal by heating calamine and charcoal.

Uses

The metal is used principally as a protective coating, or galvanizer, for iron and steel; as an ingredient of various alloys, especially brass; as plates for dry electric cells; and for die castings. Zinc oxide, known as zinc white or Chinese white, is used as a paint pigment. It is also used as a filler in rubber tires and is employed in medicine as an antiseptic ointment. Zinc chloride is used as a wood preservative and as a soldering fluid. Zinc sulfide is useful in applications involving electroluminescence, photoconductivity, and semiconductivity and has other electronic uses. It is employed as a phosphor for the screens of television tubes and in fluorescent coatings.



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atomic number of zinc, Zinc sulfide, transition elements, galvanizer, antiseptic ointment, Zinc chloride, wood preservative, pure metal, periodic table, phosphor, Zinc oxide, rubber tires, protective coating, charcoal, filler, brass, iron, plates, medicine, industrial applications, steel, Uses

 
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