iron

chemical element with symbol Fe and atomic number 26

Class type of: medication, primary metabolite, d-block Q677

Facts

50 properties

Instance of: chemical element
Subclass of: medication, primary metabolite, d-block
Part of: period 4, group 8, transition metal^[8]^[9]^[10]
Has use: ferroalloy^[11]
Associated hazard: iron poisoning
Atomic number: +26^[31]
Boiling point: +2861
Bulk modulus: +207093000000.0
Canonical SMILES: [Fe]^[5]
Chemical formula: Fe^[7]
Crystal system: body-centered cubic^[13]
Density: +7.874
Described by source: Bible Encyclopedia of Archimandrite Nicephorus, Small Brockhaus and Efron Encyclopedic Dictionary, Brockhaus and Efron Encyclopedic Dictionary, Armenian Soviet Encyclopedia, Otto's encyclopedia, Gujin Tushu Jicheng, Encyclopædia Britannica 11th edition, New International Encyclopedia, Meyer’s Universum, Sechster Band, Meyers Konversations-Lexikon, 4th edition (1885–1890), Meyer’s Universum, Neunter Band, Great Soviet Encyclopedia (1926–1947)^[45]^[46]
Different from: serum iron, حديد (حزم العدين)
Electrical conductivity: +10000000.0
Electrical resistivity: +0.0000000961
Electron configuration: [Ar] 3d⁶ 4s²
Electronegativity: +1.83^[33]
Element symbol: Fe^[6]
Embodied energy: +25
Found in taxon: Foeniculum vulgare, Phytelephas aequatorialis, Adenia gummifera, Albizia versicolor, Allophylus rubifolius, Artemia salina, Brackenridgea zanguebarica, Bridelia cathartica, Commiphora africana, Euphorbia lancifolia, Theobroma cacao, Triumfetta rhomboidea, Adenia cissampeloides, Lannea schweinfurthii var. stuhlmannii^[15]^[16]^[17]^[18]^[19]^[20]^[21]^[22]^[23]^[24]^[25]^[26]^[27]^[28]
Has characteristic: ferromagnetism
IMA Mineral Symbol: Fe
IPA transcription: ˈaɪərn^[29]

Show all 50 facts +26

Ionic radius: 0.78 (0.49–0.92, n=6)
Ionization energy: 30.7 (7.9–30.7, n=3)
Linear thermal expansion coefficient: +12.07
Magnetic ordering: ferromagnetism^[30]
Maintained by WikiProject: WikiProject Elements, WikiProject Mining, WikiProject Materials, WikiProject Rocks and minerals
Mass: +55.845
Medical condition treated: iron deficiency anemia, hypochromic anemia
Melting point: +1538
Mohs' hardness: +4.0^[32]
On focus list of Wikimedia project: Wikipedia:List of articles all languages should have, Wikipedia:Vital articles/Level/4
Oxidation state: 7 (-4–7, n=11)^[34]^[35]^[36]^[37]^[38]^[39]^[40]^[41]^[42]^[43]^[44]
P14541: 30hHfV
P14936: +126, +140
P14937: +132, +142
Permanent duplicated item: Wikidata item
Poisson's ratio: +0.353
Relative permeability: +200000
Shear modulus: +67563000000.0
Specific heat capacity: +449.0
Speed of sound: +4910.0
Standard enthalpy of formation: +415.47, +12.4
Standard molar entropy: +180.49, +34.76
Subject has role: trace metal
Thermal conductivity: +84
Time of discovery or invention: 5000 BC^[14]
Unicode character: 鐵^[12]

🏷️ Also known as

en iron en element 26 ar حديد cs Fe cs železo da jern de Eisen el σίδηρος es ferroso es ferro es ferrosa es fierro es hierro fa آهن fi rauta fr élément 26 fr fer he ברזל hi लोहा hu vas

🔖 Identifiers · 132

Library of Congress authority ID: sh85068131
GND ID: 4014002-7
Image (Wikimedia Commons): Iron electrolytic and 1cm3 cube.jpg ↗
AEDA subject keyword ID: 17568
Arabic Ontology lexical concept ID: 151078484
Art & Architecture Thesaurus ID: 300011002
Australian Educational Vocabulary ID: scot/2214
BBC Things ID: ebc64e37-1658-4631-b694-dd5a184dda15
BNCF Thesaurus ID: 474
BabelNet ID: 00006856n
Bibliothèque nationale de France ID: 11975665r
Biblissima authority ID: AS1 (networking)

Show all 132 identifiers +120

Brockhaus Enzyklopädie online ID: Hola, eisen-20
CAMEO Chemicals ID: 11656
CAS Registry Number: 7439-89-6
COD ID: 4117533
ChEBI ID: 18248, 82664
ChemSpider ID: 22368
Concepticon concept set ID: 621
CosIng number: 83503
DSSTOX compound identifier: DTXCID3023710
DSSTox substance ID: DTXSID5043710
De Agostini ID: fèrro
Dewey Decimal Classification: 672
Dictionary of Late Antiquity ID: 2419
DrugBank ID: DB01592
DrugCentral ID: 4277
EC number: 231-096-4
ECHA Substance Infocard ID: 100.028.270
Enciclopedia dei ragazzi ID: ferro
Enciclopedia dell'Arte Medievale ID: ferro
Encyclopedia of China (Third Edition) ID: 323874
Encyclopedia of Korean Culture ID: E0031188
Encyclopedie berbere keyword ID: 2031
Encyclopædia Britannica Online ID: science/iron-chemical-element
Encyclopædia Universalis ID: fer-l-element-metallique, fer-vue-d-ensemble
Equivalent class: www.hozo.jp
EuroVoc ID: 981
Europeana Fashion Vocabulary ID: 10552
FactGrid item ID: Saarbrücken Castle
Fandom article ID: memory-alpha:Iron, de.memory-alpha:Eisen, nl.memory-alpha:IJzer, memory-beta:Iron, tardis:Iron, de.babylon5:Eisen, stargate:Iron, starwars:Iron, home:Iron_(material), avp:Iron
Freebase ID: /m/025rw19
Golden ID: Iron-RM8V
Great Aragonese Encyclopedia ID: 6825
Great Norwegian Encyclopedia ID: jern
Great Russian Encyclopedia Online ID (2017): 2625019
Gujarati Vishwakosh entry: આયર્ન-લોહ
HDS ID: 026231
HSDB ID: 604
Harper's tag: iron
Hrvatska enciklopedija ID: zeljezo
Human Metabolome Database ID: HMDB0015531
IMDb keyword: iron
InChI: InChI=1S/Fe
InChIKey: XEEYBQQBJWHFJM-UHFFFAOYSA-N
Interlingual Index ID: i113955
JSTOR topic ID (archived): iron-compounds
Jewish Encyclopedia ID: 8146
KBpedia ID: Iron
KEGG ID: C00023
Klexikon article ID: Eisen
Krugosvet article (archived): nauka_i_tehnika/himiya/ZHELEZO.html
Language of Bindings ID: 2416
Larousse ID: divers/wd/51621
Latvian National Encyclopedia Online ID: 149532
Lex ID: jern
LiverTox ID: Iron
MeSH concept ID: M0011718
MeSH descriptor ID: D007501
MeSH tree code: D01.268.556.412, D01.268.956.287, D01.552.544.412
Museum-digital tag ID: 2072
NALT ID: 33434
NDF-RT ID: N0000146032
NDL Authority ID: 00572915
NE.se ID: järn
NL CR AUT ID: ph127955
Namuwiki ID: 철(원소)
National Library of Israel J9U ID: 987007560416405171
National Library of Spain SpMaBN ID (BNE v1.0): XX524497
NicoNicoPedia ID: 鉄
Nomisma ID: fe
OSHA Occupational Chemical Database ID: 499
OmegaWiki Defined Meaning: 2024
Open Food Facts ingredient ID: iron
Open Library subject ID: iron
Oxford Classical Dictionary ID: 3330
PACTOLS thesaurus ID: pcrtJWWucnutA0
PSH ID: 5775
PesticideInfo chemical ID: PRI3683
Pixiv Encyclopedia ID: 鉄
Probes And Drugs ID: PD009463
ProofWiki ID: Definition:Iron
PubChem CID: 23925
Quora topic ID: Iron
RKD thesaurus ID: 37450
Radio Algeria topic ID (Arabic): الحديد
Radio Algeria topic ID (French): fer
RationalWiki ID: Iron
RxNorm CUI: 90176
Römpp online ID: RD-05-00418
STW Thesaurus for Economics ID: 14281-3
SVKKL authority ID: h0003551-zelezo
ScienceDirect topic ID: chemistry/iron, engineering/iron, materials-science/iron
Spanish Cultural Heritage thesauri ID: materias/1000924
Springer Nature Subjects Taxonomy ID: iron
SureChEMBL ID: 28.9M (217–29.3M, n=243)
Thesaurus Linguae Aegyptiae thesaurus ID: 2YDXOJPOSBHWZJ3XK3GXZZ7B3E
Topic's main category: Category:Iron
Treccani ID: ferro
Treccani Vocabulary ID: ferro, ferro_res-8e0cae2b-dff1-11eb-94e0-00271042e8d9
Treccani's Dizionario delle Scienze Fisiche ID: ferro
Treccani's Dizionario di Economia e Finanza ID: ferro
Treccani's Dizionario di Medicina ID: ferro
Treccani's Enciclopedia Dantesca ID: ferro
Treccani's Enciclopedia Italiana ID: ferro_res-c0baf309-87e5-11dc-8e9d-0016357eee51, ferro_res-c74fe7c2-87e7-11dc-8e9d-0016357eee51, ferro
Treccani's Universo del corpo ID: ferro
UK Archival Thesaurus ID: f2/mt225/4347/3178
UMLS CUI: C0302583
UNESCO Thesaurus ID: concept10788
UNII: E1UOL152H7
UNSPSC code: 11101713
USGS Thesaurus ID: 1483
UniChem compound ID: 317271
Vikidia article ID: it:Ferro, es:Hierro, fr:Fer
Visuotinė lietuvių enciklopedija ID: gelezis
WikiKids ID: IJzer_(element)
WikiSkripta article ID: 7294
Wolfram Language entity code: Entity["Mineral", "Iron"]
WordNet 3.1 Synset ID: 14666595-n
YSO ID: 11738
Yale LUX ID: concept/bd00fef0-be6f-45f0-b588-45dd4428442d
ZVG number: 8210

Report an error or request removal Lineage (PROV-JSON)

🔗 Connections

Belongs to 130

steel, cast iron, chalcopyrite, group 8, duralumin, iron(II) sulfate, iron oxide, iron(III) oxide +122 more

← Made from material 97

anvil, pickaxe, Eastern Ghats, The Crystal Palace, Vizcaya Bridge, Széchenyi Chain Bridge, iron pillar of Delhi, Iron Crown +89 more

Named after 47

Iron Age, Al-Hadid, ferromagnetism, Verbena, Iron County, Iron County, siderite, Iron County +39 more

Found in taxon 12

Foeniculum vulgare, Theobroma cacao, Artemia salina, Commiphora africana, Phytelephas aequatorialis, Euphorbia lancifolia, Triumfetta rhomboidea, Adenia cissampeloides +4 more

Subtypes 8

direct reduced iron, allotrope of iron, iron-56, iron-60, iron-57, iron-55, iron in biology, iron-58

← Product or material produced 7

Magnitogorsk Iron and Steel Works, Thyssen AG, Chadormalu, CAP S.A., Chongqing Iron and Steel Company, Ekaterinburg plant, Timah

Described by source 6

Brockhaus and Efron Encyclopedic Dictionary, Encyclopædia Britannica 11th edition, New International Encyclopedia, Gujin Tushu Jicheng, Armenian Soviet Encyclopedia, Bible Encyclopedia of Archimandrite Nicephorus

Instance of 2

chemical element, metal

Medical condition treated 2

iron deficiency anemia, hypochromic anemia

On focus list of Wikimedia project 2

Wikipedia:List of articles all languages should have, Wikipedia:Vital articles/Level/4

Part of 2

group 8, period 4

Subclass of 2

medication, primary metabolite

← Category combines topics 2

Category:Ferrous alloys, Category:Iron mines

← Class of object(s) of occurrence 2

ironeman, serum iron

← Depicts 2

Atomium, The Blacksmith's Shop

← Drug or therapy used for treatment 2

iron deficiency anemia, hypochromic anemia

Associated hazard 1

iron poisoning

Different from 1

serum iron

FactGrid item ID 1

Saarbrücken Castle

Has characteristic 1

ferromagnetism

Has use 1

ferroalloy

Magnetic ordering 1

ferromagnetism

Topic's main category 1

Category:Iron

← Category's main topic 1

Category:Iron

← Contains 1

iron ore

← Different from 1

serum iron

← FactGrid item ID 1

Karl Alois, Prince Lichnowsky

← Has cause 1

iron poisoning

← Has characteristic 1

ferrous metal

← Has listed ingredient 1

Weet-Bix

← Has part(s) of the class 1

basic iron(III) acetate

← Is metaclass for 1

isotope of iron

← Physically interacts with 1

phytic acid

← Represents 1

Mars symbol

← Resistance in Belgium ID 1

Zelzate

← TDKIV Wikibase ID 1

framing

← Uses 1

wrought iron

Press Enter · cited answer in seconds

Summary

iron is a chemical element^[1]. iron is a type of medication^[2], primary metabolite^[3], and d-block^[4].

Body

Influence

Things named for iron include Iron Age^[47], an archaeological period^[48]; Verbena^[49], a taxon^[50]; ferromagnetism^[51]; Siderian^[52], a period^[53]; maficity^[54]; Iron Mountain^[55], a city in the United States^[56], in United States^[57], founded in 1879^[58]; siderite^[59], a mineral species^[60]; and Metal^[61], an element in Chinese astrology^[62].

Why It Matters

Entities named for iron include Iron Age^[47], an archaeological period^[48]; Verbena^[49], a taxon^[50]; ferromagnetism^[51]; Siderian^[52], a period^[53]; maficity^[54]; and Iron Mountain^[55], a city in the United States^[56], in United States^[57], founded in 1879^[58].

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

[5] ↑ iron — canonical SMILES (P233): [Fe]. PubChem. Retrieved 2016-11-18. wikidata.org.
[6] ↑ iron — element symbol (P246): Fe. Atomic weights of the elements 2009 (IUPAC Technical Report). wikidata.org.
[7] ↑ iron — chemical formula (P274): Fe. PubChem. Retrieved 2016-11-18. wikidata.org.
[2] ↑ iron — subclass of (P279): medication. DrugBank. wikidata.org.
[3] ↑ iron — subclass of (P279): primary metabolite. Reactome. reactome.org. Provenance: wikidata.org.
[4] ↑ iron — subclass of (P279): d-block. wikidata.org.
[8] ↑ iron — part of (P361): period 4. wikidata.org.
[9] ↑ iron — part of (P361): group 8. wikidata.org.
[10] ↑ iron — part of (P361): transition metal. wikidata.org.
[11] ↑ iron — has use (P366): ferroalloy. wikidata.org.
[12] ↑ iron — Unicode character (P487): 鐵. cns11643.gov.tw. Retrieved 2019-07-13. cns11643.gov.tw. Provenance: wikidata.org.
[13] ↑ iron — crystal system (P556): body-centered cubic. wikidata.org.
[14] ↑ iron — time of discovery or invention (P575): 5000 BC. wikidata.org.
[15] ↑ iron — found in taxon (P703): Foeniculum vulgare. Effect of oral administration of fennel (Foeniculum vulgare) on ciprofloxacin absorption and disposition in the rat. wikidata.org.
[16] ↑ iron — found in taxon (P703): Phytelephas aequatorialis. Phytelephas aequatorialis (arecaceae) in human and animal nutrition. wikidata.org.
[17] ↑ iron — found in taxon (P703): Adenia gummifera. Determination of iron content in different parts of herbs used traditionally for anaemia treatment in East Africa. wikidata.org.
[18] ↑ iron — found in taxon (P703): Albizia versicolor. Determination of iron content in different parts of herbs used traditionally for anaemia treatment in East Africa. wikidata.org.
[19] ↑ iron — found in taxon (P703): Allophylus rubifolius. Determination of iron content in different parts of herbs used traditionally for anaemia treatment in East Africa. wikidata.org.
[20] ↑ iron — found in taxon (P703): Artemia salina. Composition of San Francisco Bay brine shrimp (Artemia salina). wikidata.org.
[21] ↑ iron — found in taxon (P703): Brackenridgea zanguebarica. Determination of iron content in different parts of herbs used traditionally for anaemia treatment in East Africa. wikidata.org.
[22] ↑ iron — found in taxon (P703): Bridelia cathartica. Determination of iron content in different parts of herbs used traditionally for anaemia treatment in East Africa. wikidata.org.
[23] ↑ iron — found in taxon (P703): Commiphora africana. Determination of iron content in different parts of herbs used traditionally for anaemia treatment in East Africa. wikidata.org.
[24] ↑ iron — found in taxon (P703): Euphorbia lancifolia. A neglected Mayan galactagogue - ixbut (Euphorbia lancifolia).. wikidata.org.
[25] ↑ iron — found in taxon (P703): cacao. Constituents of Cocoa Husks. wikidata.org.
[26] ↑ iron — found in taxon (P703): Triumfetta rhomboidea. Determination of iron content in different parts of herbs used traditionally for anaemia treatment in East Africa. wikidata.org.
[27] ↑ iron — found in taxon (P703): Adenia cissampeloides. Determination of iron content in different parts of herbs used traditionally for anaemia treatment in East Africa. wikidata.org.
[28] ↑ iron — found in taxon (P703): Lannea schweinfurthii var. stuhlmannii. Determination of iron content in different parts of herbs used traditionally for anaemia treatment in East Africa. wikidata.org.
[29] ↑ iron — IPA transcription (P898): ˈaɪərn. wikidata.org.
[30] ↑ iron — magnetic ordering (P922): ferromagnetism. wikidata.org.
[31] ↑ iron — atomic number (P1086): 26. Atomic weights of the elements 2009 (IUPAC Technical Report). wikidata.org.
[32] ↑ iron — Mohs' hardness (P1088): 4.0. Retrieved 2026-09-05. wikidata.org.
[33] ↑ iron — electronegativity (P1108): 1.83. wikidata.org.
[34] ↑ iron — oxidation state (P1121): -2. wikidata.org.
[35] ↑ iron — oxidation state (P1121): -1. wikidata.org.
[36] ↑ iron — oxidation state (P1121): 1. wikidata.org.
[37] ↑ iron — oxidation state (P1121): 2. wikidata.org.
[38] ↑ iron — oxidation state (P1121): 3. wikidata.org.
[39] ↑ iron — oxidation state (P1121): 4. wikidata.org.
[40] ↑ iron — oxidation state (P1121): 5. wikidata.org.
[41] ↑ iron — oxidation state (P1121): 6. wikidata.org.
[42] ↑ iron — oxidation state (P1121): -4. wikidata.org.
[43] ↑ iron — oxidation state (P1121): 0. wikidata.org.
[44] ↑ iron — oxidation state (P1121): 7. wikidata.org.
[45] ↑ iron — described by source (P1343): Bible Encyclopedia of Archimandrite Nicephorus. wikidata.org.
[46] ↑ iron — described by source (P1343): Small Brockhaus and Efron Encyclopedic Dictionary. wikidata.org.

Inverse relationships (entities pointing at this one)

Inline context (facts about related entities)

[48] ↑ Iron Age — P31: archaeological period. Wikidata. wikidata.org. → on this site
[50] ↑ Verbena — P31: taxon. Wikidata. wikidata.org. → on this site
[53] ↑ Siderian — P31: period. Wikidata. wikidata.org. → on this site
[56] ↑ Iron Mountain — P31: city in the United States. Wikidata. wikidata.org. → on this site
[57] ↑ Iron Mountain — P17: United States. Wikidata. wikidata.org. → on this site
[58] ↑ Iron Mountain — P571: 1879. Wikidata. wikidata.org. → on this site
[60] ↑ siderite — P31: mineral species. Wikidata. wikidata.org. → on this site
[62] ↑ Metal — P31: element in Chinese astrology. Wikidata. wikidata.org. → on this site

Class ancestry

[1] ↑ iron is an instance of chemical element (Q11344) [P31, primary]. Wikidata. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). iron. Retrieved November 5, 2026, from https://4ort.xyz/entity/iron

MLA “iron.” 4ort.xyz Knowledge Graph, 4ort.xyz, 5 Nov. 2026, https://4ort.xyz/entity/iron.

BibTeX

@misc{4ortxyz_iron_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{iron}}, year = {2026}, url = {https://4ort.xyz/entity/iron}, note = {Accessed: 2026-11-05}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): iron — https://4ort.xyz/entity/iron (retrieved 2026-11-05)

Canonical URL: https://4ort.xyz/entity/iron · Last refreshed: November 5, 2026

Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

3d ago · MatSuBot bot · 2026-11-02 view diff on Wikidata ↗

Maintained by WikiProject → WikiProject Elements, WikiProject Mining, WikiProject Materials +1

Wikipedia languages → ['abstract', 'af', 'als', 'am', 'ami', 'an', 'ang', 'anp', 'ar', 'arc', 'ary', '

Sitelink count → 255

Claims rich → —

"/* wbeditentity-update-languages-short:0||isv, krc */ import labels from sitelinks"
17d ago · Treisijs · 2026-10-19 view diff on Wikidata ↗

Maintained by WikiProject → WikiProject Elements, WikiProject Mining, WikiProject Materials +1

Claims rich → —

"/* wbsetclaim-create:2||1 */ Maintained by WikiProject: WikiProject Elements"
28d ago · Mormegil · 2026-10-08 view diff on Wikidata ↗

P14937 → {'unit': 'Q192274', 'amount': '+132'}, {'unit': 'Q192274', 'amount': '+142'}

Claims rich → —

"/* wbsetclaim-update:2||1 */ P14936: 126 picometre"
4w ago · R1F4T · 2026-10-03 view diff on Wikidata ↗

P14936 → {'unit': 'Q192274', 'amount': '+126'}, {'unit': 'Q192274', 'amount': '+140'}

Claims rich → —

"/* wbsetclaim-create:2||1 */ P14936: 140 picometre, Add sourced P14936 element radius"
4w ago · ZI Jony · 2026-10-03 view diff on Wikidata ↗

P14936 → {'unit': 'Q192274', 'amount': '+126'}, {'unit': 'Q192274', 'amount': '+140'}

P14937 → {'unit': 'Q192274', 'amount': '+132'}, {'unit': 'Q192274', 'amount': '+142'}

Claims rich → —

"/* wbsetclaim-create:2||1 */ P14936: 126"
5w ago · عُثمان · 2026-09-29 view diff on Wikidata ↗

Equivalent class → http://www.hozo.jp/owl/YAMATO20210808.miz.owl#iron

Wikipedia languages → ['abstract', 'af', 'als', 'am', 'ami', 'an', 'ang', 'anp', 'ar', 'arc', 'ary', '

Sitelink count → 255

Claims rich → —

"/* wbsetclaim-create:2||1 */ Equivalent class: http://www.hozo.jp/owl/YAMATO20210808.miz.owl#iron"
5w ago · KrBot bot · 2026-09-26 view diff on Wikidata ↗

ZVG number → 8210

"/* wbsetclaimvalue:1| */ ZVG number: 8210, см. / see [[Template:Autofix|autofix]] на / on [[Property talk:P679]]"
6w ago · Mrwdat3 · 2026-09-23 view diff on Wikidata ↗

ZVG number → 8210

"/* wbcreateclaim-create:1| */ ZVG number: 008210, [[:toollabs:quickstatements/#/batch/275042|batch #275042]]"
6w ago · R1F4T · 2026-09-19 view diff on Wikidata ↗

Oxidation state → {'amount': '-2'}, {'amount': '-1'}, {'amount': '+1'} +8

Crystal system → body-centered cubic

"/* wbsetclaim-create:2||1 */ Crystal system: body-centered cubic, add crystal system from en:Template:Infobox element"
6w ago · R1F4T · 2026-09-19 view diff on Wikidata ↗

Oxidation state → {'amount': '-2'}, {'amount': '-1'}, {'amount': '+1'} +8

"/* wbsetclaim-create:2||1 */ Oxidation state: −4, add oxidation state from en:Template:Infobox element/symbol-to-oxidation-state"
6w ago · R1F4T · 2026-09-19 view diff on Wikidata ↗

IPA transcription → ˈaɪərn

"/* wbsetclaim-create:2||1 */ IPA transcription: ˈaɪərn, add IPA transcription (from en:Template:Infobox element/symbol-to-pronunciation)"
6w ago · R1F4T · 2026-09-19 view diff on Wikidata ↗

Pronunciation audio → LL-Q1860 (eng)-Naomi Persephone Amethyst (NaomiAmethyst)-iro

"/* wbsetclaim-create:2||1 */ Pronunciation audio: LL-Q1860 (eng)-Naomi Persephone Amethyst (NaomiAmethyst)-iron.wav, add English pronunciation audio (Lingua Libre, from en:Template:Infobox element/sym"
6w ago · R1F4T · 2026-09-18 view diff on Wikidata ↗

Subclass of → medication, primary metabolite, d-block

"/* wbsetclaim-create:2||1 */ Subclass of: d-block, add periodic table block (IUPAC 2021 convention)"
6w ago · R1F4T · 2026-09-18 view diff on Wikidata ↗

Ionization energy → {'unit': 'Q83327', 'amount': '+7.9024681'}, {'unit': 'Q83327', 'amount': '+16.19921'}, {'unit': 'Q83327', 'amount': '+30.651'}

"/* wbeditentity-statements-single-property-add:1||3 */ Ionization energy, import ionization energy from NIST Atomic Spectra Database"
8w ago · Putnik · 2026-09-10 view diff on Wikidata ↗

Visuotinė lietuvių enciklopedija ID → gelezis

Mohs' hardness → {'amount': '+4.0'}

Linear thermal expansion coefficient → {'unit': 'Q56025776', 'amount': '+12.07'}

Standard molar entropy → {'unit': 'Q20966455', 'amount': '+180.49'}, {'unit': 'Q20966455', 'amount': '+34.76'}

+ 1 other property edited (see Wikidata diff for full list)

"/* wbsetclaim-create:2||1 */ Visuotinė lietuvių enciklopedija ID: gelezis"
8w ago · Baum64 · 2026-09-05 view diff on Wikidata ↗

Standard enthalpy of formation → {'unit': 'Q752197', 'amount': '+415.47'}, {'unit': 'Q752197', 'amount': '+12.4'}

"/* wbcreateclaim-create:1| */ Standard enthalpy of formation: 415.47 kilojoule per mole, [[:toollabs:quickstatements/#/batch/270882|batch #270882]]"
9w ago · Baum64 · 2026-08-30 view diff on Wikidata ↗

Subclass of → medication, primary metabolite, d-block

Part of → period 4, group 8, transition metal

"/* wbremoveclaims-remove:1| */ Subclass of: transition metal, [[:toollabs:quickstatements/#/batch/269683|batch #269683]]"
9w ago · Baum64 · 2026-08-29 view diff on Wikidata ↗

Subclass of → medication, primary metabolite, d-block

"/* wbremoveclaims-remove:1| */ Subclass of: metal"
9w ago · Baum64 · 2026-08-29 view diff on Wikidata ↗

Subclass of → medication, primary metabolite, d-block

"/* wbcreateclaim-create:1| */ Subclass of: transition metal, [[:toollabs:quickstatements/#/batch/269657|batch #269657]]"
10w ago · Mahirtwofivesix · 2026-08-26 view diff on Wikidata ↗

Interlingual Index ID → i113955

Arabic Ontology lexical concept ID → 151078484

Found in taxon → Foeniculum vulgare, Phytelephas aequatorialis, Adenia gummifera +11

"/* wbeditentity-statements-multiple-properties-update:0||3 */ added/modified IDs mapped to WordNet 3.1"
10w ago · AdrianoRutz · 2026-08-25 view diff on Wikidata ↗

Instance of → chemical element

Subclass of → medication, primary metabolite, d-block

"/* wbsetclaim-update:2||1|1 */ Found in taxon: Artemia salina"
11w ago · Baum64 · 2026-08-16 view diff on Wikidata ↗

Electrical conductivity → {'unit': 'Q80842107', 'amount': '+10000000.0'}

Poisson's ratio → {'amount': '+0.353'}

Specific heat capacity → {'unit': 'Q3085309', 'amount': '+449.0'}

Electrical resistivity → {'unit': 'Q1441459', 'amount': '+0.0000000961'}

+ 4 other properties edited (see Wikidata diff for full list)

"/* wbcreateclaim-create:1| */ COD ID: 4117533, [[:toollabs:quickstatements/#/batch/269013|batch #269013]]"
14w ago · Pierrotrgr · 2026-07-24 view diff on Wikidata ↗

Biblissima authority ID → AS1 (networking)

"/* wbsetclaim-create:2||1 */ Biblissima authority ID: Q297160, Import ID Biblissima V3 ([[:toollabs:editgroups/b/OR/a6710164cdc|details]])"
14w ago · OBender12 · 2026-07-23 view diff on Wikidata ↗

Jewish Encyclopedia ID → 8146

"/* wbsetclaim-create:1||1 */ Jewish Encyclopedia ID: 8146, Matched to [[:toollabs:mix-n-match/#/entry/167480085|IRON (#167480085)]] in [[:toollabs:mix-n-match/#/catalog/6351|Jewish Encyclopedia]] #mix"
16w ago · Nyuhn · 2026-07-10 view diff on Wikidata ↗

P14541 → 30hHfV

"/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/40849|batch #40849]]: ZGBK ID"
18w ago · Andre Engels · 2026-06-26 view diff on Wikidata ↗

Oxford Classical Dictionary ID → 3330

"/* wbsetclaim-create:1||1 */ Oxford Classical Dictionary ID: 3330, Matched to [[:toollabs:mix-n-match/#/entry/107285546|iron (#107285546)]] in [[:toollabs:mix-n-match/#/catalog/4102|Oxford Classical D"
19w ago · Legonin · 2026-06-25 view diff on Wikidata ↗

Larousse ID → divers/wd/51621

"/* wbsetclaim-create:2||1 */ Larousse ID: divers/wd/51621"
20w ago · Susmuffin · 2026-06-14 view diff on Wikidata ↗

Harper's tag → iron

"/* wbsetclaim-create:1||1 */ Harper's tag: iron, Matched to [[:toollabs:mix-n-match/#/entry/289936878|iron (#289936878)]] in [[:toollabs:mix-n-match/#/catalog/7915|Harper's tag]] #mix'n'match"
21w ago · Jindřich Rubeš · 2026-06-11 view diff on Wikidata ↗

SVKKL authority ID → h0003551-zelezo

"/* wbcreateclaim-create:1| */ SVKKL authority ID: h0003551-zelezo, [[:toollabs:quickstatements/#/batch/259497|batch #259497]]"
24w ago · Ponor · 2026-05-16 view diff on Wikidata ↗

Hrvatska enciklopedija ID → zeljezo

"/* wbsetclaim-update:2||1 */ Hrvatska enciklopedija ID: zeljezo"

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