Periodic Table · element
Lead
Pb · Z 82
- atomic number
- 82
- atomic mass
- 207.2
- notation
- Pb
- group
- 14: Carbon
- period
- 6
- state0c
- Solid
- state20c
- Solid
- occurrence
- Primordial
- density
- 11.34
- melting pt
- 327.46
- boiling pt
- 1749
- discovered
- -7000
- abundance
- 14
- bio class
- Not essential
- bio role
- No biological role. It mimics calcium and zinc closely enough to enter bone and jam enzymes, with no threshold known to be safe.
- ore grade
- 40000
- ore minerals
- galena
- mined as
- Primary
extraction
Galena is floated, sintered to the oxide and reduced in a blast furnace to lead bullion, which is drossed and refined — the Parkes process pulls out the silver. About half of the world's lead now comes from recycled batteries rather than mines.
categories
#Crystallogens#Post-Transition Metal#Metal
Referenced by
equation
machine
mine
skill
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