I.

Introduction

Tin, symbol Sn, metallic element that has been used by people since ancient times. Tin is in group 14 (or IVa) of the periodic table. The atomic number of tin is 50.

Tin has been found in the tombs of ancient Egyptians and was exported to Europe in large quantities from Cornwall, England, during the Roman period. The ancient Egyptians considered tin and lead different forms of the same metal.