Al
Aluminum Symbol (Al)
Aluminum is element 13 of the periodic table. Copy its symbol Al and see its atomic weight, electron configuration and common compounds.
What does Al mean?
Al is the chemical symbol for aluminum, element number 13 in the periodic table. Aluminum is a post-transition metal in group 13, period 3. It is the most abundant metal in Earth’s crust, spelled “aluminium” in British English.
Codes and properties
| Chemical symbol | Al |
|---|---|
| Atomic number (Z) | 13 |
| Standard atomic weight | 26.982 |
| Group / period | 13 / 3 |
| Element category | post-transition metal |
| Electron configuration | 1s² 2s² 2p⁶ 3s² 3p¹ |
| Common compounds | Al₂O₃, AlCl₃, Al(OH)₃ |
How to type Al
- Plain text: type
Al— element symbols are ordinary Latin letters, with the first letter capitalised and the second lowercase. - Subscripts in formulas: use Unicode subscript digits (₀₁₂₃₄₅₆₇₈₉) for formulas such as Al₂O₃ — copy them from the chemistry keyboard.
- LaTeX: write
\mathrm{Al}in math mode, or use the mhchem package:\ce{Al}. - HTML:
Al; for subscripts use<sub>, e.g.H<sub>2</sub>O.
Frequently asked questions
What is the chemical symbol for aluminum?
The chemical symbol for aluminum is Al.
What is the atomic number of aluminum?
Aluminum has atomic number 13, meaning each atom has 13 protons.
What is the electron configuration of aluminum?
The ground-state electron configuration of aluminum is 1s² 2s² 2p⁶ 3s² 3p¹.