Al

Aluminum

Atomic Number 13 · Metal bar/foil

The most abundant metal in Earth's crust. Lightweight, corrosion-resistant, and widely used in packaging and construction.

Atomic Mass

26.982 u

Category

Post-Transition Metal

Phase (STP)

Solid

Density

2.698 g/cm³

Melting Point

660.32 °C

Boiling Point

2519 °C

Electronegativity

1.61 (Pauling)

Atomic Radius

125 pm

Electron Configuration

[Ne] 3s2 3p1

Discovered

1825 — Hans Christian Oersted

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Sample form: Metal bar/foil

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