![]() It is used extensively in construction materials, chemical-processing equipment, electrical conductors, aircraft, and consumer items. There is no shortage of uses for aluminum in our modern economy. It is often protected by a coat of pure aluminum. In addition to being stronger than pure aluminum, it is also tougher with the trade-off being that it is less resistant to corrosion. It contains approximately 94.3% aluminum, 4% copper. The aluminum alloy duralumin is as strong as mild steel. Aluminum has many sub-classifications of alloys, and this is an ongoing area of research. Alloys containing 90-95% aluminum are more often used in aerospace, extrusions, and cryogenics. The alloys that are 95% aluminum or greater (by composition) are typically used for metal sheets, plates, foils, and chemical equipment. Aluminum alloys generally fall into two categories: casting alloys and wrought alloys. It forms alloys with several elements such as copper, zinc, magnesium, tin, manganese, and silicon. Alloys of the Element AluminumĪluminum forms hard, light, corrosion-resistant alloys. In fact, it is highly biologically reactive and essentially toxic. It is not required as a trace mineral for human nutrition. Unlike neighboring elements sodium and magnesium, aluminum is non-essential. Some other metals near aluminum on the periodic table are zinc, copper, nickel, and magnesium. Its electron configuration is 1s 22s 22p 63s 23p 1. Aluminum will readily bond with most nonmetals.Īluminum has an electronegativity of 1.61 on the Pauling scale. Thus, it is not found in nature in its pure state. It has three valence electrons and is fairly chemically reactive. Aluminum is classified as a metal, and it lies in the third period. ![]() The element aluminum, atomic symbol Al, has an atomic number of 13 and lies in group 13 of the periodic table (to the left of silicon, below boron, and above gallium). Aluminum stands up well against most acids, but it is vulnerable to alkalies (such as ammonium and lye).Recycling aluminum products is important because it is so much more cost-efficient and energy-efficient than producing the metal by extraction.Aluminum is rust-resistant because it produces a thin but tough colorless film that protects the metal against further chemical reactions.However, he was unable to figure out how to extract it. The existence of aluminum was first hypothesized by English scientist Sir Humphry Davy in 1808.Aluminum was so expensive in the 1860s that Napoleon III of France had his personal dining ware made from it.For example, rubies are aluminum oxide with traces of other elements. Many of the most precious, beautiful stones in the world are aluminum compounds.Aluminum is the most abundant metal in the Earth’s crust. ![]()
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