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.
Rex Mill is listed on the National Register of Historic Places It was build by I.L. Hollingsworth and is named after his dog Rex. Years later the town was named after the mill. It is located on Rex Road in Clayton County, Georgia and was built around 1830. It was built as a Grist Mill where they ground corn. Crossing the creek at the mill is an old steel bridge which allows only one-way traffic (controlled by stop lights at each end).