gold
Chemical element with symbol Au and atomic number 79; a dense, malleable, and corrosion-resistant precious metal widely used as currency, in jewelry, electronics, and as a financial reserve asset
Also known as element 79
- Symbol
- Au
- Atomic number
- 79
- Mass
- 196.9666 Da
2
Sources- 1.Stated in Chemistry International“Standard Atomic Weights of 14 Chemical Elements Revised”Retrieved 2021-03-20
- 2.ciaaw.org/atomic-weights.htmRetrieved 2026-09-19
- 196.9666 Da
- Melting point
- 1,064.18°C
- Boiling point
- 2,940°C
- , 5,378°F
- Density
- 19.32 g/cm³
- Discovered by
- unknown
1
Sources- 1.goldunze.de/rohstoffe/gold/geschichte-des-goldes/Retrieved 2025-04-12
- unknown
- Discovered
- 6th millennium BCE
Overview
All data
216 statements · 25% with external sources · numbers in brackets are citations
- Formula
- Au
1
- Au
- Canonical SMILES
- [Au]
1
- [Au]
- Specific heat capacity
- 129.1 joule per kilogram kelvin difference state of matter: solid
- Thermal conductivity
- 295 watt per metre kelvin state of matter: solid · temperature: 20°C
- Different from
- Gold criterion used: descriptive page and disambiguation page have to be in different items · applies to name of subject: Gold
- Or criterion used: descriptive page and disambiguation page have to be in different items · applies to name of subject: or
- Oro criterion used: descriptive page and disambiguation page have to be in different items · applies to name of subject: oro
- Goud criterion used: descriptive page and disambiguation page have to be in different items · applies to name of subject: goud
- Oru criterion used: descriptive page and disambiguation page have to be in different items · applies to name of subject: oru
- Au criterion used: short name, acronym, initialism, or abbreviation not unique · applies to name of subject: Au
- Guld criterion used: descriptive page and disambiguation page have to be in different items · applies to name of subject: guld
- Emas criterion used: descriptive page and disambiguation page have to be in different items · applies to name of subject: emas
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- Gull criterion used: descriptive page and disambiguation page have to be in different items · applies to name of subject: gull
- Złoto criterion used: descriptive page and disambiguation page have to be in different items · applies to name of subject: złoto
- Ouro criterion used: descriptive page and disambiguation page have to be in different items · applies to name of subject: ouro
- Gowd criterion used: descriptive page and disambiguation page have to be in different items · applies to name of subject: gowd
- Vàng criterion used: descriptive page and disambiguation page have to be in different items · applies to name of subject: vàng
- Ginto criterion used: descriptive page and disambiguation page have to be in different items · applies to name of subject: ginto
- Mas criterion used: descriptive page and disambiguation page have to be in different items · applies to name of subject: mas
- Price
- $144,984.11(May 23, 2026) mass: 1 kg
1
- $5,599.9(January 28, 2026) mass: 1 troy ounce
- €47,784.69(March 25, 2020) mass: 1 kg
- $144,984.11(May 23, 2026) mass: 1 kg
- Ultimate tensile strength
- 120 MPa temperature: 20°C · under pressure: 1 standard atmosphere
- Tensile modulus of elasticity
- 79 gigapascal temperature: 20°C · under pressure: 1 standard atmosphere
- 78 gigapascal temperature: 20°C
- Poisson's ratio
- 0.4 temperature: 20°C · under pressure: 1 standard atmosphere
- Thermal diffusivity
- 127 square millimetre per second
- Electrical conductivity
- 45.2M ampere per volt metre temperature: 20°C · state of matter: solid
1
Sources- 1.thebalance.com/electrical-conductivity-in-metals-2340117Retrieved 2019-01-30
- 45.2M ampere per volt metre temperature: 20°C · state of matter: solid
- OpenStreetMap tag
- resource=gold
- Part of
- period 6 follows: platinum · followed by: mercury
- group 11 follows: silver · followed by: roentgenium
- transition metal
- Total produced
- 3,300 t valid in period: 2019
- Ionic radius
- 1.37 ångström coordination number: 6 · atomic number: 1
- 0.64 ångström coordination number: 4 · charge number: 3
- 0.85 ångström coordination number: 6 · atomic number: 3
- 2022 Harmonized System Code
- 710812
1
- 710812
- Bulk modulus
- 134B Pa
- Electrical resistivity
- 2.214e-8 ohm metre
- Linear thermal expansion coefficient
- 14.13 micrometre per metre kelvin temperature: 20°C
- Ionization energy
- 9.2256 eV
1
Sources- 1.“NIST Atomic Spectra Database, Ionization Energies”physics.nist.gov/asdRetrieved 2026-09-18
- 20.203 eV
1
Sources- 1.“NIST Atomic Spectra Database, Ionization Energies”physics.nist.gov/asdRetrieved 2026-09-18
- 30 eV
1
Sources- 1.“NIST Atomic Spectra Database, Ionization Energies”physics.nist.gov/asdRetrieved 2026-09-18
- 9.2256 eV
- Electron configuration
- [Xe] 6s¹ 4f¹⁴ 5d¹⁰
1
- [Xe] 6s¹ 4f¹⁴ 5d¹⁰
- Oxidation state
- 1
- 3
- -3
- -2
- -1
- 0
- 2
- 5
- Atomic radius
- 135 picometre
- Covalent radius
- 136 picometre
On other databases
120 identifiers linking gold across the web's reference databases
- ABC News topic IDgold
- AGROVOC IDc_33067
- Arabic Ontology lexical concept ID151078467
- Armeniapedia ID13282
- Art & Architecture Thesaurus ID300011021
- ASC Leiden Thesaurus ID294913858
- Australian Educational Vocabulary IDscot/3525
- BabelNet ID00006911n
- BBC News topic IDcwjzj55q2p3t
- BBC Things ID23ef11cb-a0eb-4cee-824a-098c6782ad4e
- Bibliothèque nationale de France ID133184606
- Biblissima authority IDQ295125
- BNCF Thesaurus ID7196
- Brockhaus Enzyklopädie online IDgold-20
- CAB ID169824
- Canadian Encyclopedia article IDgold
- CAS Registry Number7440-57-5
- ChEBI ID30050
- ChemSpider ID22421
- COD ID9013035
- Colour Index International constitution IDCI 77480
- Concepticon concept set ID1369
- CosIng number32827
- Dewey Decimal Classification669.22
- Dictionary of Late Antiquity ID2081
- DrugBank IDDB14154
- DSSTOX compound identifierDTXCID0047662
- DSSTox substance IDDTXSID3064697
- E numberE175
- EC number231-165-9
- ECHA Substance Infocard ID100.028.332
- Encyclopædia Britannica Online IDscience/gold-chemical-element
- Encyclopædia Universalis IDor
- Encyclopedia of China (Third Edition) ID (2026)47XC3y
- Encyclopedia of China (Third Edition) old ID (2021)464237
- Encyclopedia of Korean Culture IDE0007477
- Encyclopedia of Melbourne IDEM00652b
- Europeana Fashion Vocabulary ID10546
- EuroVoc ID2156
- FactGrid item IDQ102068
- France 24 topic ID (French)or
- Freebase ID/m/025rs2z
- GND ID4157819-3
- Gran Enciclopèdia Catalana IDau
- Gran Enciclopèdia Catalana ID (former scheme)0006022
- Great Norwegian Encyclopedia IDgull
- Great Russian Encyclopedia portal IDzoloto-4142c5
- Grove Art Online IDT033043
- Harper's taggold
- Hrvatska enciklopedija IDzlato
- HSDB ID2125
- IMDb keywordgold
- InChIInChI=1S/Au
- InChIKeyPCHJSUWPFVWCPO-UHFFFAOYSA-N
- Interlingual Index IDi113938
- J9U entity ID987007533656105171
- Jewish Encyclopedia ID6737
- JSTOR topic ID (archived)gold-compounds
- KBpedia IDGold
- Klexikon article IDGold
- Krugosvet article (archived)nauka_i_tehnika/himiya/ZOLOTO.html
- Language of Bindings ID2414
- Lex IDguld
- Library of Congress Authorities IDsh85055692
- Lille norske leksikon IDgull
- MeSH descriptor IDD006046
- MeSH tree codeD01.268.556.322
- Minerals.net mineral and gemstone IDgemstone/gold_gemstone
- Münzkabinett IDmaterial/3
- Museum-digital tag ID365
- NALT ID43373
- Namuwiki ID금
- National Historical Museums of Sweden IDterm/C1E8D663-ED85-49F3-9BFF-74E2960D526D
- National Library of Spain SpMaBN IDXX526003
- NDF-RT IDN0000022608
- NDL Authority ID00565802
- NE.se IDguld
- New York Times topic IDsubject/gold
- NL CR AUT IDph116778
- Nomisma IDav
- OmegaWiki Defined Meaning5912
- Online PWN Encyclopedia ID4001784
- Open Food Facts food additive IDe175-gold
- OpenAlex IDC2910496842
- Oxford Classical Dictionary ID2861
- PACTOLS thesaurus IDpcrtuihSl3eSnW
- PM20 ware ID142877
- Probes And Drugs IDPD073654
- ProofWiki IDDefinition:Gold
- PSH ID5787