![]() In the city of Zawar, Rajasthan, the first quantities of zinc were obtained by reducing calamine (zinc carbonate, ZnCO 3 ) with wool. To continue with, the first scientifically supported evidence of zinc smelting identifies India on the map of the world as the place where the first zinc smelting in the history of civilization took place during the period from 1100-1500. The first uncovered brass artifacts originate from Babylonia and Assyria (3000 B.C.), and Palestine (1400-1000 B.C.). According to a research paper in archeology, this chemical element was mostly used in copper for making brass. The earliest archaeological evidence points to Switzerland, China, Greece, Cyprus, and Palestine as the first locations where zinc had been used. Zinc metal has been around since ancient times. Accordingly, zinc possesses strong anti-corrosive properties. When exposed to air, this transition metal reacts with carbon dioxide and forms a layer of zinc carbonate that protects the metal and prevents the formation of additional reactions with water or air. It’s a moderately strong conductor of both heat and electricity. Zinc has a hexagonal packed structure and shares similar chemical properties with magnesium. In addition, this member of the transition metals family of elements has an electronegativity of 1.6 according to Pauling, whereas the atomic radius according to van der Waals is 0.138 nm. When exposed to temperatures that range between 230F (110☌) and 300F (150☌), zinc metal becomes more malleable and ductile. With the periodic table symbol Zn, atomic number 30, atomic mass of 65.38 g.mol -1, and electron configuration 3d 10 4s 2, zinc is a brittle, silvery-white metal at room temperature. The energy of the second ionization: 1723 kJ.mol -1ĭiscovery date: In 1746 by Andreas Marggraf The energy of the first ionization: 904.5 kJ.mol -1 Half-life: From more than 1.6 milliseconds to 244.26 daysĮlectronegativity according to Pauling: 1.6 The symbol in the periodic table of elements: Zn Fact Box Chemical and Physical Properties of Zinc Zinc deficiency is considered to be one of the most common public health problems in the world. The bioavailability of this mineral is extremely significant for the homeostatic processes of the human body. Today, this non-ferrous base metal is the fourth most commonly used metal after iron, aluminum, and copper.īeing an important dietary nutrient, zinc participates in a vast number of vital metabolic and cellular processes in our body. As a member of the transition metals family of elements, zinc is a divalent chemical that forms numerous compounds with wide application in medicine and almost all industrial branches. It’s the 24 th most abundant element in Earth’s crust. Zinc is a chemical element with the atomic number 30 in the periodic table. ![]()
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