Broadnax,Quintellis

 ** Quintellis Broadnax ** LEAD
 * 2/5/10 **

Lead is a main-group element with symbol Pb(Latin; //plumbum //) and atomic number 82. Lead is a soft, malleable poor metal, also considered to be one of the heavy metals. Lead has a bluish-white color when freshly cut, but tarnishes to a dull grayish color when exposed to air. It has a shiny chrome-silver luster when melted into a liquid. gray


 * The History Of Lead ||  ||

Date of Discovery: ** Known to the ancients **Name Origin:** From the Greek word //protos// (first) ammunition paint (in the old days) food cans fishing weights,pencil. ||  || Properites of Element Properties Of Element
 * Discoverer: ** Unknown
 * Symbol Origin :** From the Latin word //plumbum// (lead)
 * Uses: ** solder and shielding against radiation, batteries
 * Obtained From :** galena ||  ||
 * Lead was one of the earliest metals discovered by the human race and was in use by **3000 B.C.** The ancient Romans used lead for making water pipes and lining baths, and the plumber who joins and mends pipes ||  ||
 * Common Uses

** Name: ** Lead
 * Symbol :** Pb
 * Atomic Number :** 82
 * Atomic Mass :** 207.2 amu
 * Melting Point: ** 327.5 °C (600.65 K, 621.5 °F)
 * Boiling Point: ** 1740.0 °C (2013.15 K, 3164.0 °F)
 * Number of Protons/Electrons :** 82
 * Number of Neutrons: ** 125
 * Classification: ** Other Metals
 * Crystal Structure: ** Cubic
 * Density @ 293 K :** 11.34 g/cm3
 * Color: ** bluish



References [|www.wikipedia].org/wiki/lead [|www.ask.com/quistions] []