82 Pb 207.2
Lead
Post-Transition Metal
Lead (Pb) is a chemical element with atomic number 82, classified as a post-transition metal. At room temperature it is a solid. It has been known since ancient times.
Properties
- Atomic number
- 82
- Atomic mass
- 207.2 u
- Category
- Post-Transition Metal
- Group
- 14
- Period
- 6
- Block
- p-block
- Electron configuration
- [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p²
- Phase at STP
- Solid
- Density
- 11.342 g/cm³
- Melting point
- 600.61 K (327.5 °C)
- Boiling point
- 2022 K (1748.8 °C)
- Electronegativity
- 2.33
- Atomic radius
- 154 pm
- Ionization energy
- 7.417 eV
- Discovery
- Known since ancient times
Common uses
Batteries, radiation shielding, ammunition, pipes
Did you know?
Heavy, soft metal that's toxic but excellent for radiation protection.