Periodic Table of Elements

13

Aluminium

24.305

Aluminium was discovered by Hans Christian Oersted, Denmark in 1825.

Name: Aluminium
Symbol: Al
Atomic number: 13
Atomic weight: 26.982
State: solid
Group, period, block: 13, 3, p
Color: silvery gray metallic
Classification: Post-transition metal
Electron configuration: 3s23p1
2,8,3

Physical properties

Density: 2.70 g.m-3
Melting point: 9933.47 K, 660.32 C, 1220.58 F
Boiling point: 2792 K, 2519 C, 4566 F

Atomic properties

Oxidation states: 3, 2[3], 1[4]
Electronegativity: 1.31 (Pauling scale)
Ionization energies: 1st: 577.5 kJmol-1
Covalent radius: 1214 pm
Van der Waals radius: 184 pm
  • Al
  • Electron Configuration

Isotopes

There is one naturally occurring isotope of aluminium exist, 27Al.