Aluminum (Al) — Element 13: Properties & Data | Aladdin Scientific
Aluminum(Al) — Element 13
Aluminum (Al) is a post-transition metal with atomic number 13 and atomic mass 26.9815. It has melting point 933.437 K (660 °C), boiling point 2792 K (2519 °C), density 2.7 g/cm³. It sits in group 13 and period 3 of the periodic table and has been known since antiquity.
Key facts
| Atomic mass | 26.9815 u |
|---|---|
| Electron configuration | [Ne]3s2 3p1 |
| Oxidation states | +3 |
| Electronegativity (Pauling) | 1.61 |
| Atomic radius (van der Waals) | 184 pm |
| Ionization energy | 5.986 eV |
| Electron affinity | 0.441 eV |
| Melting point | 933.437 K |
| Boiling point | 2792 K |
| Density | 2.7 g/cm³ |
| Standard state | Solid |
| Year discovered | Ancient |
Frequently asked questions
What is the electron configuration of aluminum?
The ground-state electron configuration of aluminum is [Ne]3s2 3p1.
What group and period is aluminum in?
Aluminum (Al) is in group 13 and period 3 of the periodic table, classified as a post-transition metal.
What is the melting point of aluminum?
Aluminum melts at 933.437 K (660 °C).
What is the standard state of aluminum?
Aluminum is a solid at standard temperature and pressure.
Related elements
About this data: property values compiled from IUPAC Standard Atomic Weights (2021), the NIST Atomic Spectra Database, and PubChem. Curated by the Aladdin Scientific technical team. Last reviewed: .