lead

**//__Lead__// Atomic Number:** 82 **Symbol:** Pb > > **Pictures:** > > > > > > > > > > > > > > > > **//Sources: http://www.webelements.com/lead/, [|http://medical-dictionary.thefreedictionary.com/Lead+(element),//**], http://www.webelements.com/lead/uses.html, http://en.wikipedia.org/wiki/Lead-206,
 * Atomic Weight:** 207.2
 * Meaning of Element:** The definition of any of the conductors connected to the electrocardiograph, each comprising two or more electrodes that are attached at specific body sites and used to examine electrical activity by monitoring changes in the electrical potential between them.
 * Uses of Element:** ammunition, cable covering, shield against X-rays, alloying, solder, and the metal in dioxide are used in storage batteries.
 * Physical Properties of Element:** //Color: light grey, Hardiness: 1.5, Streak: light gray with a shiny streak. Transparency: Opaque, Specific Gravity: 11.3, Luster: Metallic, Cleavage: No Cleavage, Fracture: Hackly, Density: 11.4 qm cm3, Tenacity: malleable, ductile and sectille//
 * Chemical Properties of Element:**  //Melting Point: 600.65 K, Boiling Point: 2013 K, Heat of Fusion: 4.799 kJ mol, Heat of Vapor: 177.7 kJ mol, Specific Heat: 0.13 JqmK.//
 * Common Compounds of Element:**
 * Whom Discovered the Element:** The element is known to ancient civilization.
 * Common Isotopes:**
 * //radium G//: 206Pb
 * //radium G//: 206Pb
 * <span style="FONT-FAMILY: Arial, Helvetica, sans-serif">//actinium D//: 207Pb
 * <span style="FONT-FAMILY: 'Courier New', Courier, monospace"><span style="FONT-FAMILY: Impact, Charcoal, sans-serif"><span style="FONT-FAMILY: Arial, Helvetica, sans-serif">//thorium D//: 208Pb
 * <span style="FONT-FAMILY: 'Courier New', Courier, monospace"><span style="FONT-FAMILY: Impact, Charcoal, sans-serif"><span style="FONT-FAMILY: Arial, Helvetica, sans-serif">//radium D//, //radio-lead// or //radiolead//: 210Pb
 * <span style="FONT-FAMILY: 'Courier New', Courier, monospace"><span style="FONT-FAMILY: Impact, Charcoal, sans-serif"><span style="FONT-FAMILY: Arial, Helvetica, sans-serif">//actinium B//: 211Pb
 * <span style="FONT-FAMILY: 'Courier New', Courier, monospace"><span style="FONT-FAMILY: Impact, Charcoal, sans-serif"><span style="FONT-FAMILY: Arial, Helvetica, sans-serif">//thorium B//: 212Pb
 * <span style="FONT-FAMILY: 'Courier New', Courier, monospace"><span style="FONT-FAMILY: Impact, Charcoal, sans-serif"><span style="FONT-FAMILY: Arial, Helvetica, sans-serif">//radium B//: 214Pb
 * <span style="FONT-FAMILY: 'Courier New', Courier, monospace"><span style="FONT-FAMILY: Impact, Charcoal, sans-serif"><span style="FONT-FAMILY: Arial, Helvetica, sans-serif">//actinium D//: 207Pb
 * <span style="FONT-FAMILY: 'Courier New', Courier, monospace"><span style="FONT-FAMILY: Impact, Charcoal, sans-serif"><span style="FONT-FAMILY: Arial, Helvetica, sans-serif">//thorium D//: 208Pb
 * <span style="FONT-FAMILY: 'Courier New', Courier, monospace"><span style="FONT-FAMILY: Impact, Charcoal, sans-serif"><span style="FONT-FAMILY: Arial, Helvetica, sans-serif">//radium D//, //radio-lead// or //radiolead//: 210Pb
 * <span style="FONT-FAMILY: 'Courier New', Courier, monospace"><span style="FONT-FAMILY: Impact, Charcoal, sans-serif"><span style="FONT-FAMILY: Arial, Helvetica, sans-serif">//actinium B//: 211Pb
 * <span style="FONT-FAMILY: 'Courier New', Courier, monospace"><span style="FONT-FAMILY: Impact, Charcoal, sans-serif"><span style="FONT-FAMILY: Arial, Helvetica, sans-serif">//thorium B//: 212Pb
 * <span style="FONT-FAMILY: 'Courier New', Courier, monospace"><span style="FONT-FAMILY: Impact, Charcoal, sans-serif"><span style="FONT-FAMILY: Arial, Helvetica, sans-serif">//radium B//: 214Pb