Tin is a chemical element with the
symbol Sn (Latin: stannum) and is has an atomic number of 50.
The atomic weight of Tin is 118.710. 
Things you might not know about
Tin:
- When a bar of tin is bent, a crackling sound
known as the tin cry can be heard due to the twinning of the
crystals.
- Tin foil was once a common wrapping material
for foods and drugs; replaced in the early 20th century by the use
of aluminum foil, which is now commonly referred to as tin
foil.
- The original Ford Model T was known
colloquially as the "Tin Lizzy".
- Pewter is 85–99% tin.
See GC2XAY2 - Hydrogen, for an explanation
about this series of caches.