Tin is a chemical element with symbol Sn (for Latin: stannum) and atomic number 50. It is a main group metal in group 14 of the periodic table. Tin shows chemical similarity to both neighboring group-14 elements, germanium and lead, and has two possible oxidation states, +2 and the slightly more stable +4. Tin is the 49th most abundant element and has, with 10 stable isotopes, the largest number of stable isotopes in the periodic table.Symbol: Sn
Melting point: 231.9 °C
Electron configuration: Kr 4d10 5s2 5p2
Atomic number: 50
Discovered: 3500 BC
Atomic mass: 118.71 u