iron

chemical element with symbol Fe and atomic number 26
Thing chemical_element Q677
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iron

Summary

iron is a chemical element[1]. iron ranks in the top 8% of chemical_element entities by monthly Wikipedia readership (48,792 views/month).[2]

Key Facts

  • iron's instance of is recorded as chemical element[3].
  • iron's canonical SMILES is recorded as [Fe][4].
  • iron's element symbol is recorded as Fe[5].
  • iron's chemical formula is recorded as Fe[6].
  • iron is a type of medication[7].
  • iron is a type of primary metabolite[8].
  • iron is a type of d-block[9].
  • iron is part of period 4[10].
  • iron is part of group 8[11].
  • iron is part of transition metal[12].
  • iron is used for ferroalloy[13].
  • iron's Commons category is recorded as Iron[14].
  • iron's Unicode character is recorded as 鐵[15].
  • iron's crystal system is recorded as body-centered cubic[16].
  • iron's time of discovery or invention is recorded as 5000 BC[17].
  • iron's found in taxon is recorded as Foeniculum vulgare[18].
  • iron's found in taxon is recorded as Phytelephas aequatorialis[19].
  • iron's found in taxon is recorded as Adenia gummifera[20].
  • iron's found in taxon is recorded as Albizia versicolor[21].
  • iron's found in taxon is recorded as Allophylus rubifolius[22].
  • iron's found in taxon is recorded as Artemia salina[23].
  • iron's found in taxon is recorded as Brackenridgea zanguebarica[24].
  • iron's found in taxon is recorded as Bridelia cathartica[25].
  • iron's found in taxon is recorded as Commiphora africana[26].
  • iron's found in taxon is recorded as Euphorbia lancifolia[27].

Body

Definition and Type

iron's instance of is recorded as chemical element[3]. Recorded subclass of include medication[7], primary metabolite[8], and d-block[9].

Use and Application

iron is used for ferroalloy[13]. Part of include period 4[10], a period[28]; group 8[11], a group[29]; and transition metal[12].

Influence

Things named for iron include Iron Age[30], an archaeological period[31]; Verbena[32], a taxon[33]; ferromagnetism[34]; Siderian[35], a period[36]; maficity[37]; Iron Mountain[38], a city in the United States[39], in United States[40], founded in 1879[41]; siderite[42], a mineral species[43]; and Metal[44], an element in Chinese astrology[45].

Why It Matters

iron ranks in the top 8% of chemical_element entities by monthly Wikipedia readership (48,792 views/month).[2] iron has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.[46] iron is known by 40 alternative names across languages and contexts.[47]

Entities named for iron include Iron Age[30], an archaeological period[31]; Verbena[32], a taxon[33]; ferromagnetism[34]; Siderian[35], a period[36]; maficity[37]; and Iron Mountain[38], a city in the United States[39], in United States[40], founded in 1879[41].

References

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

Direct Wikidata claims

  1. [3] ↑ . wikidata.org.
  2. [4] ↑ . wikidata.org.
  3. [5] ↑ . wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [7] ↑ . wikidata.org.
  6. [8] ↑ . wikidata.org.
  7. [9] ↑ . wikidata.org.
  8. [10] ↑ . wikidata.org.
  9. [11] ↑ . wikidata.org.
  10. [12] ↑ . wikidata.org.
  11. [13] ↑ . wikidata.org.
  12. [14] ↑ . wikidata.org.
  13. [15] ↑ . wikidata.org.
  14. [16] ↑ . wikidata.org.
  15. [17] ↑ . wikidata.org.
  16. [18] ↑ . wikidata.org.
  17. [19] ↑ . wikidata.org.
  18. [20] ↑ . wikidata.org.
  19. [21] ↑ . wikidata.org.
  20. [22] ↑ . wikidata.org.
  21. [23] ↑ . wikidata.org.
  22. [24] ↑ . wikidata.org.
  23. [25] ↑ . wikidata.org.
  24. [26] ↑ . wikidata.org.
  25. [27] ↑ . wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [30] ↑ . wikidata.org. → on this site
  2. [32] ↑ . wikidata.org. → on this site
  3. [34] ↑ . wikidata.org. → on this site
  4. [35] ↑ . wikidata.org. → on this site
  5. [37] ↑ . wikidata.org. → on this site
  6. [38] ↑ . wikidata.org. → on this site
  7. [42] ↑ . wikidata.org. → on this site
  8. [44] ↑ . wikidata.org. → on this site

Inline context (facts about related entities)

  1. [28] ↑ . Wikidata. wikidata.org. → on this site
  2. [29] ↑ . Wikidata. wikidata.org. → on this site
  3. [31] ↑ . Wikidata. wikidata.org. → on this site
  4. [33] ↑ . Wikidata. wikidata.org. → on this site
  5. [36] ↑ . Wikidata. wikidata.org. → on this site
  6. [39] ↑ . Wikidata. wikidata.org. → on this site
  7. [40] ↑ . Wikidata. wikidata.org. → on this site
  8. [41] ↑ . Wikidata. wikidata.org. → on this site
  9. [43] ↑ . Wikidata. wikidata.org. → on this site
  10. [45] ↑ . Wikidata. wikidata.org. → on this site

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [46] ↑ . Wikidata sitelinks. wikidata.org.
  3. [47] ↑ . Wikidata aliases. 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 May 3, 2026, from https://4ort.xyz/entity/iron
MLA “iron.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 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: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): iron — https://4ort.xyz/entity/iron (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/iron · Last refreshed:

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.

  1. 1d ago · Mrwdat3 · 2026-09-23 view diff on Wikidata ↗
    Zvg number → 8210, 008210
    "/* wbcreateclaim-create:1| */ [[Property:P679]]: 008210, [[:toollabs:quickstatements/#/batch/275042|batch #275042]]"
  2. 5d 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 */ [[Property:P556]]: [[Q851536]], add crystal system from en:Template:Infobox element"
  3. 5d ago · R1F4T · 2026-09-19 view diff on Wikidata ↗
    Oxidation state → {'amount': '-2'}, {'amount': '-1'}, {'amount': '+1'} +8
    "/* wbsetclaim-create:2||1 */ [[Property:P1121]]: −4, add oxidation state from en:Template:Infobox element/symbol-to-oxidation-state"
  4. 5d ago · R1F4T · 2026-09-19 view diff on Wikidata ↗
    Ipa transcription → ˈaɪərn
    "/* wbsetclaim-create:2||1 */ [[Property:P898]]: ˈaɪərn, add IPA transcription (from en:Template:Infobox element/symbol-to-pronunciation)"
  5. 5d ago · R1F4T · 2026-09-19 view diff on Wikidata ↗
    Pronunciation audio → LL-Q1860 (eng)-Naomi Persephone Amethyst (NaomiAmethyst)-iro
    "/* wbsetclaim-create:2||1 */ [[Property:P443]]: LL-Q1860 (eng)-Naomi Persephone Amethyst (NaomiAmethyst)-iron.wav, add English pronunciation audio (Lingua Libre, from en:Template:Infobox element/symbo"
  6. 6d ago · R1F4T · 2026-09-18 view diff on Wikidata ↗
    Subclass of → medication, primary metabolite, d-block
    "/* wbsetclaim-create:2||1 */ [[Property:P279]]: [[Q214503]], add periodic table block (IUPAC 2021 convention)"
  7. 6d ago · R1F4T · 2026-09-18 view diff on Wikidata ↗
    Ionization energy → {'amount': '+7.9024681'}, {'amount': '+16.19921'}, {'amount': '+30.651'}
    "/* wbeditentity-statements-single-property-add:1||3 */ [[Property:P2260]], import ionization energy from NIST Atomic Spectra Database"
  8. 14d ago · Putnik · 2026-09-10 view diff on Wikidata ↗
    Visuotinė lietuvių enciklopedija id → gelezis
    Mohs' hardness → {'amount': '+4.0'}
    Linear thermal expansion coefficient → {'amount': '+12.07'}
    Standard molar entropy → {'amount': '+180.49'}, {'amount': '+34.76'}
    + 1 other property edited (see Wikidata diff for full list)
    "/* wbsetclaim-create:2||1 */ [[Property:P7666]]: gelezis"
  9. 19d ago · Baum64 · 2026-09-05 view diff on Wikidata ↗
    Standard enthalpy of formation → {'amount': '+415.47'}, {'amount': '+12.4'}
    "/* wbcreateclaim-create:1| */ [[Property:P3078]]: 415.47 kilojoule per mole, [[:toollabs:quickstatements/#/batch/270882|batch #270882]]"
  10. 25d 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| */ [[Property:P279]]: [[Q19588]], [[:toollabs:quickstatements/#/batch/269683|batch #269683]]"
  11. 26d ago · Baum64 · 2026-08-29 view diff on Wikidata ↗
    Subclass of → medication, primary metabolite, d-block
    "/* wbremoveclaims-remove:1| */ [[Property:P279]]: [[Q11426]]"
  12. 26d ago · Baum64 · 2026-08-29 view diff on Wikidata ↗
    Subclass of → medication, primary metabolite, d-block
    "/* wbcreateclaim-create:1| */ [[Property:P279]]: [[Q19588]], [[:toollabs:quickstatements/#/batch/269657|batch #269657]]"
  13. 29d 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"
  14. 4w 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 */ [[Property:P703]]: [[Q1135229]]"
  15. 5w ago · Baum64 · 2026-08-16 view diff on Wikidata ↗
    Electrical conductivity → {'amount': '+10000000.0'}
    Poisson's ratio → {'amount': '+0.353'}
    Specific heat capacity → {'amount': '+449.0'}
    Electrical resistivity → {'amount': '+0.0000000961'}
    + 4 other properties edited (see Wikidata diff for full list)
    "/* wbcreateclaim-create:1| */ [[Property:P9824]]: 4117533, [[:toollabs:quickstatements/#/batch/269013|batch #269013]]"
  16. 8w ago · Pierrotrgr · 2026-07-24 view diff on Wikidata ↗
    Biblissima authority id → AS1 (networking)
    "/* wbsetclaim-create:2||1 */ [[Property:P11493]]: Q297160, Import ID Biblissima V3 ([[:toollabs:editgroups/b/OR/a6710164cdc|details]])"
  17. 9w ago · OBender12 · 2026-07-23 view diff on Wikidata ↗
    Jewish encyclopedia id → 8146
    "/* wbsetclaim-create:1||1 */ [[Property:P8590]]: 8146, Matched to [[:toollabs:mix-n-match/#/entry/167480085|IRON (#167480085)]] in [[:toollabs:mix-n-match/#/catalog/6351|Jewish Encyclopedia]] #mix'n'm"
  18. 10w 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"
  19. 12w ago · Andre Engels · 2026-06-26 view diff on Wikidata ↗
    Oxford classical dictionary id → 3330
    "/* wbsetclaim-create:1||1 */ [[Property:P9106]]: 3330, Matched to [[:toollabs:mix-n-match/#/entry/107285546|iron (#107285546)]] in [[:toollabs:mix-n-match/#/catalog/4102|Oxford Classical Dictionary]] "
  20. 13w ago · Legonin · 2026-06-25 view diff on Wikidata ↗
    Larousse id → divers/wd/51621
    "/* wbsetclaim-create:2||1 */ [[Property:P6058]]: divers/wd/51621"
  21. 14w ago · Susmuffin · 2026-06-14 view diff on Wikidata ↗
    Harper's tag → iron
    "/* wbsetclaim-create:1||1 */ [[Property:P13772]]: iron, Matched to [[:toollabs:mix-n-match/#/entry/289936878|iron (#289936878)]] in [[:toollabs:mix-n-match/#/catalog/7915|Harper's tag]] #mix'n'match"
  22. 15w ago · Jindřich Rubeš · 2026-06-11 view diff on Wikidata ↗
    Svkkl authority id → h0003551-zelezo
    "/* wbcreateclaim-create:1| */ [[Property:P9322]]: h0003551-zelezo, [[:toollabs:quickstatements/#/batch/259497|batch #259497]]"
  23. 18w ago · Ponor · 2026-05-16 view diff on Wikidata ↗
    Hrvatska enciklopedija id → zeljezo
    "/* wbsetclaim-update:2||1 */ [[Property:P7982]]: zeljezo"
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