13 Al 26.982
Aluminum
Post-Transition Metal
Aluminum (Al) is a chemical element with atomic number 13, classified as a post-transition metal. At room temperature it is a solid. It was discovered in 1825 by Hans Christian Ørsted.
Properties
- Atomic number
- 13
- Atomic mass
- 26.982 u
- Category
- Post-Transition Metal
- Group
- 13
- Period
- 3
- Block
- p-block
- Electron configuration
- [Ne] 3s² 3p¹
- Phase at STP
- Solid
- Density
- 2.698 g/cm³
- Melting point
- 933.47 K (660.3 °C)
- Boiling point
- 2792 K (2518.8 °C)
- Electronegativity
- 1.61
- Atomic radius
- 118 pm
- Ionization energy
- 5.986 eV
- Discovery
- 1825 · Hans Christian Ørsted
Common uses
Cans, foil, aircraft, building materials, electrical wiring
Did you know?
Most abundant metal in Earth's crust and was once more valuable than gold.