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Zinc is a chemical element with the symbol Zn and atomic number 30. It is a slightly brittle metal at room temperature and has a shiny-greyish appearance when oxidation is removed. It is the first element in group 12 (IIB) of the periodic table.
Atomic data. Oxidation states and isotopes. Supply risk. Pressure and temperature data – advanced. Podcasts. Video. References. Element Zinc (Zn), Group 12, Atomic Number 30, d-block, Mass 65.38.
Cynk (Zn, łac. zincum) – pierwiastek chemiczny, metal przejściowy z grupy cynkowców w układzie okresowym (grupa 12). Odkryto 30 izotopów cynku z przedziału mas 54–83, z czego trwałe są izotopy 64Zn, 66Zn, 67Zn, 68Zn i 70Zn [7]. Został odkryty w Indiach lub Chinach przed 1500 rokiem p.n.e.
zinc (Zn), chemical element, a low-melting metal of Group 12 (IIb, or zinc group) of the periodic table, that is essential to life and is one of the most widely used metals. Zinc is of considerable commercial importance. Occurrence, uses, and properties.
Crystal Structure. Simple Hexagonal. History. Metallic zinc was produced in the 13th century A.D. India by reducing calamine with organic substances such as wool. The metal was rediscovered in Europe by Andreas Sigismund Marggraf in 1746. He heated a mixture of calamine ore and carbon in a closed vessel without copper to produce the metal.
Chemical Characteristics. Zinc is a reactive metal. The surface of zinc metal is quickly tarnished as it reacts with the carbon dioxide present in the air and forms a layer of zinc carbonate. It is a strong reducing agent [4]. Zinc readily reacts with non-metals, acids and alkalis.
3 lip 2019 · Properties. Zinc has a melting point of 419.58°C, a boiling point of 907°C, a specific gravity of 7.133 (25°C), with a valence of 2. Zinc is a lustrous blue-white metal. It is brittle at low temperatures but becomes malleable at 100-150°C. It is a fair electrical conductor. Zinc burns in air at high red heat, evolving white clouds of zinc oxide.
