Aluminium

13
Al
Gruppe
13
Periode
3
Blokk
p
Proton
Elektron
Nøytron
13
13
14
Generelle eigenskapar
Atomnummer
13
Atommasse
26,9815386
Massetal
27
Kategori
Metall
Farge
Sølv
Radioaktiv
Nei
From the Latin word alumen, alum
Krystallstruktur
Flatesentrert kubisk
Historie
In 1761, Guyton de Morveau proposed the name alumine for the base in alum, and Antoine Lavoisier, in 1787, thought this to be the oxide of a still undiscovered metal.

Sir Humphry Davy identified the existence of a metal base of alum in 1808.

Hans Christian Ørsted was the first to isolate metallic aluminum in 1825 in impure form.

Friedrich Wöhler is generally credited with having isolated the metal in 1827.
Elektron per energinivå
2, 8, 3
Elektronkonfigurasjon
[Ne] 3s2 3p1
Al
Aluminum does not stick to magnets under normal conditions
Fysiske eigenskapar
Tilstandsform
Fast stoff
Tettleik
2,698 g/cm3
Smeltepunkt
933,47 K | 660,32 °C | 1220,58 °F
Kokepunkt
2792,15 K | 2519 °C | 4566,2 °F
Smeltevarme
10,7 kJ/mol
Fordampingsvarme
293 kJ/mol
Spesifikk varmekapasitet
0,897 J/g·K
Førekomst i jordskorpa
8,1%
Førekomst i universet
0,005%
Chunk
Bilet­kreditering: Images-of-elements
Chunk of aluminum
CAS-nummer
7429-90-5
PubChem CID-nummer
5359268
Atom eigenskapar
Atomradius
143 pm
Kovalent radius
121 pm
Elektronegativitet
1,61 (Paulings skala)
Ioniseringspotensial
5,9858 eV
Molart volum
9,98 cm3/mol
Termisk konduktivitet
2,37 W/cm·K
Oksidasjonstrinn
1, 3
Bruksområde
Aluminum is used in an extensive range of products from drinks cans to window frames and boats to aircraft.

It is used in electrical transmission lines.

It is also used for kitchen utensils, outside building decoration, and in thousands of industrial applications.

When alloyed with small amounts of copper, magnesium, silicon, manganese, or other elements impart a variety of useful properties.
Aluminum is not known to be toxic
Isotopar
Stabile isotopar
27Al
Ustabile isotopar
21Al, 22Al, 23Al, 24Al, 25Al, 26Al, 28Al, 29Al, 30Al, 31Al, 32Al, 33Al, 34Al, 35Al, 36Al, 37Al, 38Al, 39Al, 40Al, 41Al, 42Al