Guld
79
Au
Gruppe
11
Periode
6
Blok
d
Protoner
Elektroner
Neutroner
79
79
118
Generelle Egenskaber
Atomnummer
79
Atommasse
196,966569
Masseantal
197
Kategori
Overgangsmetaller
Farve
Guld
Radioaktiv
Nej
From the Latin word aurum meaning gold
Krystalstruktur
Fladecentreret 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.
Elektroner i hver skal
2, 8, 18, 32, 18, 1
Elektronkonfiguration
[Xe] 4f14 5d10 6s1
India is the world's largest single consumer of gold
Fysiske Egenskaber
Tilstandsform
Fast stof
Massefylde
19,282 g/cm3
Smeltepunkt
1337,35 K | 1064,2 °C | 1947,56 °F
Kogepunkt
3129,15 K | 2856 °C | 5172,8 °F
Smeltevarme
12,5 kJ/mol
Fordampningsvarme
330 kJ/mol
Varmefylde
0,129 J/g·K
Forekomst i jordskorpen
3,1×10-7%
Forekomst i universet
6×10-8%
Billede akkrediteringer: 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
Atomare egenskaber
Atomradius
144 pm
Kovalent radius
136 pm
Elektronegativitet
2,54 (Paulings skala)
Ioniseringspotentiale
9,2255 eV
Atomvolumen
10,2 cm3/mol
Varmeledningsevne
3,17 W/cm·K
Oxidationstrin
-1, 1, 2, 3, 5
Anvendelser
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
Isotoper
Stabile isotoper
197AuUstabile isotoper
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