For 10 points, name this transition metal often used in car batteries and x-ray shielding, with an atomic number 82 and symbol Pb.
The Betterton-Kroll and Betts processes are industrial methods of separating bismuth from this element.  Two of its isotopes, 214 and 210, are in the decay chain of uranium-238, both times after alpha emission by polonium.  In the body, it interferes with ALA enzymes that are important in the formation of heme, leading to microcytic anemia, and in nature it is found in the ore galena. For 10 points, name this transition metal often used in car batteries and x-ray shielding, with an atomic number 82 and symbol Pb.
The Betterton-Kroll and Betts processes are industrial methods of separating bismuth from this element.  
lead