Aluminium (Al) is a post-transition metal with atomic number 13 and atomic mass 26.9815 u. This sheet describes its fundamental properties, periodic position and physical characteristics.
Identity
- Name: Aluminium
- Symbol: Al
- Atomic number: 13
- Atomic mass: 26.9815 u
Position in the periodic table
- Group: 13
- Period: 3
- Category: Post-transition metal
Physico-chemical properties
- Standard state: Solid
- Melting point: 660.3 °C
- Density: 2.70 g/cm³
- Electron configuration: [Ne] 3s² 3p¹
Scientific description
Aluminium is a p-block metal commonly classified as a post-transition metal. It occupies group 13 and period 3 of the periodic table and is characterized by low density and high corrosion resistance. Its standard atomic mass is 26.9815 u.