Gull
79
Au
Gruppe
11
Periode
6
Blokk
d
Proton
Elektron
Nøytron
79
79
118
Generelle eigenskapar
Atomnummer
79
Atommasse
196,966569
Massetal
197
Kategori
Transisjonsmetall
Farge
Gull
Radioaktiv
Nei
From the Latin word aurum meaning gold
Krystallstruktur
Flatesentrert kubisk
Historie
Gold has been known since prehistoric times and was the first metal used by humans.
Gold artifacts dated to 5000 years ago have been found in Egyptian tombs.
Gold of 98% purity has been found in Nahal Qunah in the ancient kingdom of Israel, dating from about 6000 years ago.
Gold artifacts dated to 5000 years ago have been found in Egyptian tombs.
Gold of 98% purity has been found in Nahal Qunah in the ancient kingdom of Israel, dating from about 6000 years ago.
Elektron per energinivå
2, 8, 18, 32, 18, 1
Elektronkonfigurasjon
[Xe] 4f14 5d10 6s1
India is the world's largest single consumer of gold
Fysiske eigenskapar
Tilstandsform
Fast stoff
Tettleik
19,282 g/cm3
Smeltepunkt
1337,35 K | 1064,2 °C | 1947,56 °F
Kokepunkt
3129,15 K | 2856 °C | 5172,8 °F
Smeltevarme
12,5 kJ/mol
Fordampingsvarme
330 kJ/mol
Spesifikk varmekapasitet
0,129 J/g·K
Førekomst i jordskorpa
3,1×10-7%
Førekomst i universet
6×10-8%
Biletkreditering: Wikimedia Commons (Alchemist-hp)
Synthetic made gold crystals by the chemical transport reaction in chlorine gas
CAS-nummer
7440-57-5
PubChem CID-nummer
23985
Atom eigenskapar
Atomradius
144 pm
Kovalent radius
136 pm
Elektronegativitet
2,54 (Paulings skala)
Ioniseringspotensial
9,2255 eV
Molart volum
10,2 cm3/mol
Termisk konduktivitet
3,17 W/cm·K
Oksidasjonstrinn
-1, 1, 2, 3, 5
Bruksområde
Gold is used in coinage and is a standard for monetary systems in many countries.
It is also extensively used for jewelry, decoration, dental work, and for plating.
Gold is used widely in microelectronic circuits to ensure reliable, corrosion-resistant and static-free performance.
Gold leaf, flake or dust is used in some gourmet foods as decorative ingredient.
It is also extensively used for jewelry, decoration, dental work, and for plating.
Gold is used widely in microelectronic circuits to ensure reliable, corrosion-resistant and static-free performance.
Gold leaf, flake or dust is used in some gourmet foods as decorative ingredient.
Gold is considered to be non-toxic
Isotopar
Stabile isotopar
197AuUstabile isotopar
169Au, 170Au, 171Au, 172Au, 173Au, 174Au, 175Au, 176Au, 177Au, 178Au, 179Au, 180Au, 181Au, 182Au, 183Au, 184Au, 185Au, 186Au, 187Au, 188Au, 189Au, 190Au, 191Au, 192Au, 193Au, 194Au, 195Au, 196Au, 198Au, 199Au, 200Au, 201Au, 202Au, 203Au, 204Au, 205Au