Tin (Sn) is a metallic chemical element with atomic number 50. Its symbol Sn comes from its Latin name, stannum.
Tin has been known to Man since the Bronze Age, where it was alloyed together with copper to make bronze. Its most common industrial use today is in solder.
Tin has no less than ten stable isotopes, which is more than any other element. Its most abundant isotope is 120Sn, with 50 protons and 70 neutrons.