atomic number 13 Aluminum, symbol Al, the most abundant gilded particle in the earths crust. The atomic number of aluminum is 13; the section is in group 13 (IIIa) of the periodic table. Hans Christian Orstead, Danish pastry chemist, first isolated aluminum in 1825, development a chemical process involving potassium amalgam. Between 1827 and 1845, Friedrich Wöhler, a German chemist, improved Oersteds process by employ metallic potassium. He was the first to measure the precise graveness of aluminum and show its lightness. In 1854 Henri Sainte-Claire Deville, in France, obtained the metal by lessen aluminum chloride with sodium.
Aided by the financial backup man of sle ep III, Deville established a large-scale experimental comprise and displayed fresh aluminum at the Paris Exposition of 1855. Aluminum is a lightweight, silvery metal. The atomic weight of aluminum is 26.9815; the division melts at 660° C (1220° F), boils at 2467° C (4473° F), and has a specific gravity of 2.7. Aluminum is a strongly...If you want to get a near essay, order it on our website:
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