82Pb207.2
Lead
Post-transition metalsSofter metals with lower melting points, often used in alloys and solders.
[Xe] 4f¹⁴ 5d¹⁰ 6s² 6p²
- Atomic number
- 82
- Atomic mass
- 207.2
- Protons
- 82
- Neutrons
- 125 (most common)
- Electrons
- 82
- Shells
- 2, 8, 18, 32, 18, 4
- State at 25 °C
- Solid
- Position
- Group 14, period 6
Proton (+)Neutron (0)Electron (−)
Discovered byKnown since ancient times
The Romans used lead for water pipes. Its symbol Pb comes from the Latin plumbum, which also gives us the word plumbing.
Did you know?
- Lead was removed from petrol and paint because it harms the brain. India phased out leaded petrol by 2000.
- It is soft enough to scratch with a fingernail.
Where it's found
- Galena ore
What it's used for
- Car batteries
- Radiation shielding in X-ray rooms
Try it
There's no safe home experiment for Lead. Explore it with the animated atom above instead.