The metal on the fourth and twelfth intervals (IIB) of the periodic table of elements, with an atomic number of 30, and an atomic number of 68.38, has a density of 133.7. The melting point and its boiling point are equal to 433.49 and 907 degrees Celsius, and their degree of hardness is 2.5 in Mohs scale. This metal contains natural and radioactive isotopes. On a pure, soft, white metal with the ability to polish blue-gray bayjalia, and soluble in aqueous solutions, and insoluble. The most common form of oxidation of this metal is 2+.
On a natural material that exists on the earth's crust, in addition to what is found in the earth's crust in the form of soil and rock, there is also air, water and the biosphere, plants, animals and the human body also have metal itself. Zinc in the form of mineral and metal often comes from the earth's crust. The average zinc content in the dry skin is about 70 mg, the maximum and minimum amount of zinc in the earth's crust is between 10 and 300 mg / kg. In some areas it is found to be much higher and higher in concentrations (5-15%), and such mineral soils are found more on the surface of the earth or at a little depth from the surface of the earth known as the mine.
Zinc metal in terms of its functional properties, including reactivity with iron, corrosion resistance, electrochemical properties, low melting point, fluidity, high capacity for surface treatment, strength, alloying, ductility, high tensile strength, nutrient uptake, healing and ... has found a variety of uses. When the metal is alloyed with 4% aluminum, its yield strength and hardness increase considerably. The electronegativity is due to its extensive use in dry batteries.
Zinc is brittle and crystalline at normal temperature, but it has the property of hammering and scrubbing at temperatures between 150-110 ° C. Its main sources are sulfide mine, zincblende or zincite sphalerite (zinc oxide), calamine (zinc silicate) and smithy sonite (zinc carbonate). Sulfide rock is heated to oxide and cooled to 1200 degrees Celsius. Then evaporated and extruded from the reaction chamber and molded into molds called the splitter. The zinc extraction method is obtained by burning and oxidizing zinc ores and reacting zinc oxide with coal or carbon by distillation of the metal. Zn has five stable isotopes in nature. Sixteen unstable isotopes are also known for zinc. This element has a semiconductor property and burns very hot in the air with red flames and toxic white clouds are emitted. The formatting ability of this element is high.