NO. 013Post-Transition

Al

Aluminum

Aluminum is a lightweight, corrosion-resistant metal widely used in construction, transportation, and packaging. It forms a protective oxide layer that prevents further corrosion. Aluminum is highly recyclable and plays a major role in modern industrial and technological applications.

Crystal Structure

Face-centered cubic (fcc)

Technical Specifications

Atomic Mass26.982 u

Density2.7 g/cm³

Melting Point933.47 K

Boiling Point2792 K

Atomic Radius143 pm

Electronegativity1.61

Ionization Energy578 kJ/mol

Electron Affinity42.5 kJ/mol

Bonding TypeMetallic

Oxidation States3

Acid/BaseCan act as acid or base

ReactivityMedium

Electron Configuration

[Ne] 3s2 3p1

Discovered ByHans Christian Ørsted

Year1825

Known Isotopes

Aluminum-27