Lead

Chris S.

The metal is used as shielding from radiation, e.g. in x-ray rooms. And nuclear reactors. || media type="youtube" key="pM2dcXrM378" height="315" width="420" citations "webelements." Lead. N.p., 2012. Web. 28 Mar 2012. . Bentor, Yinon. __Chemical Element.com - Lead__. Mar. 28, 2012 youtube //. N.d. Photograph. youtube
 * **Name of Element ** || **lead ** ||
 * **Element Symbol ** || pb ||
 * **Atomic Number ** || **82 ** ||
 * **Atomic Mass ** || **207 ** ||
 * **Number of protons, electrons, and neutrons ** || **P82,e82,n125**  ||
 * **Trend ** || **METALLOID**  ||
 * **State of matter ** || **solid ** ||
 * **<span style="font-family: 'Times New Roman','serif'; font-size: 16px;">Common uses ** || **<span style="color: #333333; font-family: 'Arial Black','sans-serif'; font-size: 12px;">Batteries, **<span style="color: #333333; font-family: 'Arial Black','sans-serif'; font-size: 12px;">plumbing Lead is also used in cable covering, as ammunition, as electrodes, in solder and as roofing material.
 * **<span style="font-family: 'Times New Roman','serif'; font-size: 16px;">Family / Group ** || **<span style="font-family: 'Times New Roman','serif'; font-size: 16px;">14 ** ||
 * **<span style="font-family: 'Times New Roman','serif'; font-size: 16px;">Bohr Model ** || [[image:science3-2012/Bohr.JPG width="240" height="240"]] ||
 * **<span style="font-family: 'Times New Roman','serif'; font-size: 16px;">Lewis Structure ** || [[image:science3-2012/smith_lewis_structure.JPG width="113" height="119"]] ||
 * **<span style="font-family: 'Times New Roman','serif'; font-size: 16px;">When Discovered ** || <span style="color: #333333; font-family: 'Arial','sans-serif'; font-size: 12px;">Lead has been known since ancient times. We do not know who discovered it. ||
 * **<span style="font-family: 'Times New Roman','serif'; font-size: 16px;">Who Discovered ** || <span style="color: #333333; font-family: 'Arial','sans-serif'; font-size: 12px;">We do not know who discovered it. ||
 * **<span style="font-family: 'Times New Roman','serif'; font-size: 16px;">Where found ** || <span style="font-family: 'Verdana','sans-serif'; font-size: 16px;">Elemental lead is found in nature sparingly. ||
 * **<span style="font-family: 'Times New Roman','serif'; font-size: 16px;">Common isotopes ** ||  ||
 * **<span style="font-family: 'Times New Roman','serif'; font-size: 16px;">Ion charge ** ||  ||
 * **<span style="font-family: 'Times New Roman','serif'; font-size: 16px;">Common molecules ** ||  ||
 * **<span style="font-family: 'Times New Roman','serif'; font-size: 16px;">Balanced equation ** || PbS + 3/2O2 → PbO + SO2 ||
 * **<span style="font-family: 'Times New Roman','serif'; font-size: 16px;">Boiling/melting point ** || **<span style="color: #333333; font-family: 'Verdana','sans-serif'; font-size: 11px;">Boiling point:1750 oC melting point:327.46 oC ** ||