Oro
79
Au
Grupo
11
Perio
6
Bloko
d
Protonoj
Elektronoj
Neŭtronoj
79
79
118
Ĝeneralaj Propraĵoj
Atoma Nombro
79
Atommaso
196,966569
Amasa Nombro
197
Kategorio
Transirmetaloj
Koloro
Orkolora
Radioaktiva
Ne
From the Latin word aurum meaning gold
Kristala Strukturo
Vizaĝo Centrita Kubo
Historio
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.
Elektronoj per ŝelo
2, 8, 18, 32, 18, 1
Elektrona Agordo
[Xe] 4f14 5d10 6s1
India is the world's largest single consumer of gold
Fizikaj Propraĵoj
Fazo
Solido
Denso
19,282 g/cm3
Fandpunkto
1337,35 K | 1064,2 °C | 1947,56 °F
Bolpunkto
3129,15 K | 2856 °C | 5172,8 °F
Varmo de Fuzio
12,5 kJ/mol
Varmo de Vaporiĝo
330 kJ/mol
Specifa Varmo Kapacito
0,129 J/g·K
Krusta Abundo
3,1×10-7%
Universa Abundo
6×10-8%
Bildaj kreditoj: Wikimedia Commons (Alchemist-hp)
Synthetic made gold crystals by the chemical transport reaction in chlorine gas
CAS Nombro
7440-57-5
PubChem Kunmetita Identiga Nombro
23985
Atomaj Propraĵoj
Atoma Radiuso
144 pm
Kovalenta Radiuso
136 pm
Elektronegativeco
2,54 (Pauling-skalo)
Potencialo de jonigo
9,2255 eV
Atoma Volumo
10,2 cm3/mol
Termika Kondukto
3,17 W/cm·K
Oksidaj Ŝtatoj
-1, 1, 2, 3, 5
Aplikoj
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
Izotopoj
Stabilaj Izotopoj
197AuMalstabilaj Isotopoj
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