It happens all over the periodic table. The chemical symbol for lead is Pb. For mercury, Hg. For antimony, Sb. My chemistry teacher in high school cracked up every time she referred to the symbol for ...

This week's element is lead, which has the atomic number 82 and the symbol Pb. Its symbol comes from the Latin word, plumbum, for lead. Lead rarely occurs in its elemental form in the wild. It is ...