Aluminum

Atomic number

13

Atomic mass (u)

26.981538

Category

Post-transition metal

Standard state

Solid

Melting point

660.29 °C (933.437 K)

Boiling point

2518.85 °C (2792 K)

Density (g/cm³)

2.70

Electronegativity (Pauling)

1.61

Electron configuration

[Ne]3s2 3p1

Oxidation states

+3

Atomic radius (pm)

184

First ionization energy (eV)

5.986

Discovery & recognition

Discovery year / period (PubChem)

Ancient

Discovery credited to (RSC)

Hans Oersted

Date or period recorded by RSC

1825

Discovery place

Copenhagen, Denmark

An ancient date does not identify a first human discovery. Different references may date observation, isolation and formal recognition differently.

Natural occurrence & production

The creation of an element’s nuclei and its concentration into terrestrial deposits are different processes. The occurrence note below concerns its presence or production on Earth; it is not a complete account of nucleosynthesis.

“Aluminium is the most abundant metal in the Earth’s crust (8.1%) but is rarely found uncombined in nature.”

Royal Society of Chemistry · occurrence excerpt ↗

Continue the research

Reference values are not product specifications. Blank values have not been estimated. For superheavy elements, some properties and family assignments are theoretical or incompletely measured.