Alumunium

13
Al
Golongan
13
Periode
3
Blok
p
Proton
Elektron
Neutron
13
13
14
Sifat Umum
Nomor atom
13
Massa atom
26,9815386
Nomor massa
27
Kategori
Logam pasca-​transisi
Warna
Perak
Radioaktif
Tidak
Dari kata Latin alumen, tawas
Struktur kristal
Kubik Berpusat-muka
Sejarah
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 kulit
2, 8, 3
Konfigurasi elektron
[Ne] 3s2 3p1
Al
Aluminum does not stick to magnets under normal conditions
Sifat Fisika
Fase
Solid
Kepadatan
2,698 g/cm3
Titik lebur
933,47 K | 660,32 °C | 1220,58 °F
Titik didih
2792,15 K | 2519 °C | 4566,2 °F
Kalor peleburan
10,7 kJ/mol
Kalor penguapan
293 kJ/mol
Kapasitas kalor molar
0,897 J/g·K
Kelimpahan di kerak bumi
8,1%
Kelimpahan di alam semesta
0,005%
Chunk
Kredit Gambar: Images-of-elements
Chunk of aluminum
Nomor CAS
7429-90-5
PubChem CID Number
5359268
Sifat Atom
Jari-jari atom
143 pm
Jari-jari kovalen
121 pm
Elektronegativitas
1,61 (Skala Pauling)
Potensi Ionisasi
5,9858 eV
Volume atom
9,98 cm3/mol
Kondusivitas termal
2,37 W/cm·K
Bilangan oksidasi
1, 3
Aplikasi
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
Isotop
Isotop stabil
27Al
Isotop tidak stabil
21Al, 22Al, 23Al, 24Al, 25Al, 26Al, 28Al, 29Al, 30Al, 31Al, 32Al, 33Al, 34Al, 35Al, 36Al, 37Al, 38Al, 39Al, 40Al, 41Al, 42Al