not known. Origin Of Name: From the Anglo-Saxon word lead; Latin, plumbum (the origin of the symbol Pb is the Latin word plumbum meaning liquid silver. Calculate the molecular weight of Lead or molecular weight Pb.Also see the full list of chemical elements and atomic weights.rom the Anglo-Saxon word lead; Latin, plumbum (the origin of the symbol Pb is the Latin word plumbum meaning liquid silver. Calculate the molecular weight of Lead or molecular weight Pb.
Homefacts City Report. Rex is located in Clayton County, GA. The population is NR. There are 3 public schools in Rex with an average Homefacts rating of B. The total crime rate for Rex is moderate, and there are 31 registered sex offenders residing in the city. Unemployment in Rex is very high and the median home sales price is $80,000.
Columbia County is a county located in the US state of Georgia. As of 2013, the population was 135,416. The legal county seat is Appling, but the location of Columbia County's government and courts is Evans. Columbia County is included in the Augusta-Richmond County, GA-SC Metropolitan Statistical Area, and is currently one of the fastest-growing counties in the United States. It is located along the Savannah River.