lead (Pb), n a common soft, blue-gray, metallic element. Its atomic number is 82, and its atomic weight is 207. In its metallic form, it is used as a protective shielding against radiographs.ead. A metallic element, atomic no. 82, atomic wt. 207.2; occurs in nature as an oxide or one of the salts, but chiefly as the sulfide, or galena; 210 Pb (half-life equal to 22.6 years) has been used in the treatment of certain eye conditions.
Republic, MO. Sponsored Topics. Republic is a city in Christian and Greene counties in the U.S. state of Missouri. The population was 8,438 at the 2000 census, and 14,300 as of 2009. It is part of the Springfield, Missouri, Metropolitan Statistical Area.
Sponsored Topics. Missouri City is a city located in the U.S. state of Texas within the HoustonâSugar LandâBaytown metropolitan area. The city is mostly in Fort Bend County with a small portion within Harris County. As of the 2000 U.S. Census, the city had a total population of 52,913 (though a 2005 estimate placed the population at 63,910).