01 About Lead
The Roman water pipes were made of lead (plumbum โ plumbing). Lead poisoning may have contributed to the decline of the Roman Empire. Dense enough to block radiation.
02 Physical Properties
State at room temperature๐ชจ Solid
Melting point327.5 ยฐC
Boiling point1749 ยฐC
Density11.34 g/cmยณ
Atomic mass207.2 u
Electron configuration2,8,18,32,18,4
Period / GroupPeriod 6, Group 14
BlockP-block
03 Discovery
Lead has been known since ancient times - its discoverer is recorded as "Ancient".