PERIODIC TABLE

Aluminum

Atomic No. 13 Al Aluminum

About Aluminum

Aluminum is a light metal with atomic number 13 whose compounds predominantly contain aluminum in the +3 oxidation state. Aluminum oxide is used in structural ceramics and electrical insulation, while aluminum nitride provides thermal management in electronic components. Lithium aluminate has a distinct electrochemical application as a porous ceramic matrix that holds the liquid electrolyte in molten carbonate fuel cells.

Properties

Atomic Number
13
Atomic Symbol
Al
Atomic Mass
26.9815
CAS No.
7429-90-5
Density
2.7 g/cm³
Series
post-transition metal
Melting Point
660.32°C
Boiling Point
2,519°C
Thermal Conductivity
2.35 W/cm °C
Heat of Fusion
10.7 kJ/mol
Heat of Vaporization
293 kJ/mol
Electronegativity
1.61 pauling
Crystal Structure
Cubic
Electric Type
Conductor
Electrical Conductivity
3.8×107 S/m
Resistivity
26.5 nΩ·m at 20°C

Aluminum Products

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