Lead+-+Pb

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 * Element Name: Lead[[image:jgarofalo8science/Lead.jpg width="260" height="180" align="right"]]
 * Atomic Symbol: Pb
 * Atomic Number: 82
 * Atomic Mass: 207.2
 * Density: 11.35

Lead was used in the 3000 b.c's by the Romans for plumbing and lining bathtubs. It is the one of the earliest metals discovered by humans. In Medieval Times, Lead was used for roofing, coffins, cisterns, and statues

and ornaments. In earlier times it was used to join the strips of colored glass in the windows of churches. The gray color of lead is created by the oxygen in the air mixing with the metal. Lead got it's name by the latin word plumbum meaning lead. Lead is very soft and can be easily molded into shapes. Some uses of the element is roofing materials, lead-acid storage batteries, protective sheilding against X rays and radiation from nuclear reactors,and solder. Compounds of the element are lead peroxide or dioxide, litharge a lead monoxide, red lead is lead tetroxide, and white lead is a basic lead carbonate. Some interesting facts of Lead is that Galena is THE most valuable lead ore. Also lead can cause lesions in the central nervous system. Another fact is that if you think you have lead poisoning look for the signs of weakness, lost of appetite, and vomiting.

Sources: [|Web Elements.com]; [|Info Please.com] Stephen, Fleishman. "lead". The Academic American Encyclopedia, 1997 Lead Project Page

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