13 · Al
Aluminium
Disputed announcement by Ørsted in 1825. Isolation accepted from Wöhler in 1827.
Identity
- Atomic number
- 13
- Symbol
- Al
- Canonical name
- Aluminium
- Category
- post-transition metal
- Group
- 13
- Period
- 3
- Block
- p
Properties
These quantities come from the Periodic Table JSON compilation. They have not yet been checked, one by one, against CIAAW atomic weights or NIST measurements. A value marked estimated is not a measurement.
- Atomic mass
- 26.981539 u
- Electron configuration
- [Ne] 3s2 3p1
- Electrons per shell
- 2, 8, 3
- Standard state
- solid
- Density
- 2.7 g/cm³
- Melting point
- 933.47 K
- Boiling point
- 2,743 K
- Electronegativity
- 1.61 Pauling
- First ionization energy
- 577.5 kJ/mol
- Electron affinity
- 41.762 kJ/mol
Notable isotopes
This summary is not an inventory of every isotope.
- Al-27 · 100 % · stable
History
An impure metal
Isolation · disputed · 1825
Ørsted reports a metal from aluminium chloride. The purity of the sample remains disputed.
Metal characterized
Isolation · confirmed · 1827
Wöhler obtains aluminium whose metallic nature is accepted. This is not the disputed 1825 announcement.
Etymology
- Theme
- mineral
- Language
- latin
- Root
- alumen
- Meaning
- alum
Scientists
See also
Sources
- IUPAC, Periodic Table of the Elements
- Bowserinator, Periodic Table JSON. Compilation secondaire d’où viennent les grandeurs physiques importées (masse, densité, températures, énergies). Elles ne sont pas revérifiées une à une auprès du NIST ou de la CIAAW.
- John Emsley, Nature’s Building Blocks: An A–Z Guide to the Elements