The Betterton-Kroll process removes bismuth from ores of this element and, with sulfur, it is  found in the mineral galena.
The Betterton-Kroll process removes bismuth from ores of this element and, with sulfur, it is  found in the mineral galena. The tetraethyl form of this element raises octane ratings in  gasoline. Oxides of this element form (*) crystal glass, and this element and tin combine to make  solder. This element can provide shielding from radiation and was once used in pipes and paints.  For 10 points, name this toxic element with chemical symbol Pb.
The Betterton-Kroll process removes bismuth from ores of this element and, with sulfur, it is  found in the mineral galena.
Lead