01 About Tin
Bronze Age = copper + tin. "Tin cry" - bending a tin bar produces a crackling sound from crystal twinning. White tin spontaneously converts to grey powder below 13.2ยฐC ("tin pest").
02 Physical Properties
State at room temperature๐ชจ Solid
Melting point231.9 ยฐC
Boiling point2602 ยฐC
Density7.265 g/cmยณ
Atomic mass118.71 u
Electron configuration2,8,18,18,4
Period / GroupPeriod 5, Group 14
BlockP-block
03 Discovery
Tin has been known since ancient times - its discoverer is recorded as "Ancient".