cobalt

chemical element with symbol Co and atomic number 27
Thing chemical_element Q740
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cobalt

Summary

cobalt is a chemical element[1]. cobalt draws 3,462 Wikipedia views per month (chemical_element category, ranking #26 of 144).[2]

Key Facts

  • cobalt is credited with the discovery of Georg Brandt[3].
  • cobalt's instance of is recorded as chemical element[4].
  • kobold is named after cobalt[5].
  • cobalt is made of cobaltite[6].
  • cobalt is made of safflorite[7].
  • cobalt is made of glaucodot[8].
  • cobalt is made of skutterudite[9].
  • cobalt is made of cattierite[10].
  • cobalt is made of erythrite[11].
  • cobalt is made of spherocobaltite[12].
  • cobalt's element symbol is recorded as Co[13].
  • cobalt is a type of simple substance[14].
  • cobalt is a type of heavy metal[15].
  • cobalt is a type of allergen[16].
  • cobalt is a type of d-block[17].
  • cobalt is part of period 4[18].
  • cobalt is part of group 9[19].
  • cobalt is part of transition metal[20].
  • cobalt's Commons category is recorded as Cobalt[21].
  • cobalt's Unicode character is recorded as 鈷[22].
  • cobalt's crystal system is recorded as face-centered cubic[23].
  • cobalt's time of discovery or invention is recorded as 1735[24].
  • cobalt's point group is recorded as cubic-hexoctahedral[25].
  • cobalt's space group is recorded as space group Fm-3m[26].
  • cobalt's IPA transcription is recorded as ˈkoʊbɒlt[27].

Body

Definition and Type

cobalt's instance of is recorded as chemical element[4]. Recorded subclass of include simple substance[14], heavy metal[15], allergen[16], and d-block[17].

Origins

kobold is named after cobalt[5].

Use and Application

Part of include period 4[18], a period[28]; group 9[19], a group[29]; and transition metal[20].

Influence

Things named for cobalt include cobaltite[30], a mineral species[31]; spherocobaltite[32], a mineral species[33]; cobaltlotharmeyerite[34], a mineral species[35]; cobaltarthurite[36], a mineral species[37]; and cobaltomenite[38], a mineral species[39].

Why It Matters

cobalt draws 3,462 Wikipedia views per month (chemical_element category, ranking #26 of 144).[2] cobalt has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.[40] cobalt is known by 61 alternative names across languages and contexts.[41]

Entities named for cobalt include cobaltite[30], a mineral species[31]; spherocobaltite[32], a mineral species[33]; cobaltlotharmeyerite[34], a mineral species[35]; cobaltarthurite[36], a mineral species[37]; and cobaltomenite[38], a mineral species[39].

References

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

Direct Wikidata claims

  1. [4] ↑ . wikidata.org.
  2. [3] ↑ . 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] ↑ . Atomic weights of the elements 2009 (IUPAC Technical Report). 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] ↑ . cns11643.gov.tw. Retrieved . cns11643.gov.tw. Provenance: 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. [36] ↑ . wikidata.org. → on this site
  5. [38] ↑ . 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. [35] ↑ . Wikidata. wikidata.org. → on this site
  6. [37] ↑ . Wikidata. wikidata.org. → on this site
  7. [39] ↑ . 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. [40] ↑ . Wikidata sitelinks. wikidata.org.
  3. [41] ↑ . 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). cobalt. Retrieved October 3, 2026, from https://4ort.xyz/entity/cobalt
MLA “cobalt.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 Oct. 2026, https://4ort.xyz/entity/cobalt.
BibTeX @misc{4ortxyz_cobalt_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{cobalt}}, year = {2026}, url = {https://4ort.xyz/entity/cobalt}, note = {Accessed: 2026-10-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): cobalt — https://4ort.xyz/entity/cobalt (retrieved 2026-10-03)

Canonical URL: https://4ort.xyz/entity/cobalt · 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 · R1F4T · 2026-10-03 view diff on Wikidata ↗
    P14936 → {'unit': 'Q192274', 'amount': '+135'}
    Sitelink count → 163
    Wikipedia languages → ['af', 'am', 'an', 'anp', 'ar', 'ary', 'arz', 'ast', 'avk', 'awa', 'az', 'azb',
    P14937 → {'unit': 'Q192274', 'amount': '+138'}
    + 1 other property edited (see Wikidata diff for full list)
    "/* wbsetclaim-create:2||1 */ [[Property:P14936]]: 135 picometre, Add sourced P14936 element radius"
  2. 8d ago · KrBot bot · 2026-09-26 view diff on Wikidata ↗
    Zvg number → 7270
    "/* wbsetclaimvalue:1| */ [[Property:P679]]: 7270, см. / see [[Template:Autofix|autofix]] на / on [[Property talk:P679]]"
  3. 11d ago · Mrwdat3 · 2026-09-23 view diff on Wikidata ↗
    Zvg number → 7270
    "/* wbcreateclaim-create:1| */ [[Property:P679]]: 007270, [[:toollabs:quickstatements/#/batch/275042|batch #275042]]"
  4. 15d ago · R1F4T · 2026-09-19 view diff on Wikidata ↗
    Oxidation state → {'amount': '-1'}, {'amount': '+1'}, {'amount': '+2'} +5
    "/* wbsetclaim-create:2||1 */ [[Property:P1121]]: −3, add oxidation state from en:Template:Infobox element/symbol-to-oxidation-state"
  5. 15d ago · R1F4T · 2026-09-19 view diff on Wikidata ↗
    Ipa transcription → ˈkoʊbɒlt
    Pronunciation audio → Ru-кобальт.ogg, En-us-cobalt.ogg, LL-Q1860 (eng)-Naomi Persephone Amethyst (NaomiAmethyst)-cob
    "/* wbsetclaim-create:2||1 */ [[Property:P898]]: ˈkoʊbɒlt, add IPA transcription (from en:Template:Infobox element/symbol-to-pronunciation)"
  6. 15d ago · R1F4T · 2026-09-19 view diff on Wikidata ↗
    Pronunciation audio → Ru-кобальт.ogg, En-us-cobalt.ogg, LL-Q1860 (eng)-Naomi Persephone Amethyst (NaomiAmethyst)-cob
    "/* wbsetclaim-create:2||1 */ [[Property:P443]]: En-us-cobalt.ogg, add English pronunciation audio from Data:Chemical elements.tab"
  7. 16d ago · R1F4T · 2026-09-18 view diff on Wikidata ↗
    Subclass of → simple substance, heavy metal, allergen +1
    "/* wbsetclaim-create:2||1 */ [[Property:P279]]: [[Q214503]], add periodic table block (IUPAC 2021 convention)"
  8. 16d ago · R1F4T · 2026-09-18 view diff on Wikidata ↗
    Mohs' hardness → {'amount': '+5.0'}
    Standard molar entropy → {'unit': 'Q20966455', 'amount': '+179.51'}, {'unit': 'Q20966455', 'amount': '+41.0'}, {'unit': 'Q20966455', 'amount': '+30.07'}
    Ionization energy → {'unit': 'Q83327', 'amount': '+7.88101'}, {'unit': 'Q83327', 'amount': '+17.0844'}
    "/* wbeditentity-statements-single-property-add:1||2 */ [[Property:P2260]], import ionization energy from NIST Atomic Spectra Database"
  9. 28d ago · Baum64 · 2026-09-05 view diff on Wikidata ↗
    Point group → cubic-hexoctahedral
    Standard enthalpy of formation → {'unit': 'Q752197', 'amount': '+426.68'}, {'unit': 'Q752197', 'amount': '+18.0'}
    "/* wbcreateclaim-create:1| */ [[Property:P589]]: [[Q13359931]], [[:toollabs:quickstatements/#/batch/270882|batch #270882]]"
  10. 4w ago · Baum64 · 2026-08-30 view diff on Wikidata ↗
    Subclass of → simple substance, heavy metal, allergen +1
    "/* wbsetclaim-create:2||1 */ [[Property:P279]]: [[Q186752]]"
  11. 5w ago · Baum64 · 2026-08-30 view diff on Wikidata ↗
    Subclass of → simple substance, heavy metal, allergen +1
    Part of → period 4, group 9, transition metal
    "/* wbremoveclaims-remove:1| */ [[Property:P279]]: [[Q19588]], [[:toollabs:quickstatements/#/batch/269683|batch #269683]]"
  12. 5w ago · Baum64 · 2026-08-29 view diff on Wikidata ↗
    Subclass of → simple substance, heavy metal, allergen +1
    "/* wbcreateclaim-create:1| */ [[Property:P279]]: [[Q19588]], [[:toollabs:quickstatements/#/batch/269657|batch #269657]]"
  13. 5w ago · Mahirtwofivesix · 2026-08-26 view diff on Wikidata ↗
    Babelnet id → 00006857n
    Interlingual index id → i113922
    Arabic ontology lexical concept id → 151078451
    "/* wbeditentity-statements-multiple-properties-update:0||4 */ added/modified IDs mapped to WordNet 3.1"
  14. 6w ago · KrBot bot · 2026-08-17 view diff on Wikidata ↗
    Electrical conductivity → {'unit': 'Q80842107', 'amount': '+16700000.0'}
    Specific heat capacity → {'unit': 'Q3085309', 'amount': '+421.0'}
    Electrical resistivity → {'unit': 'Q1441459', 'amount': '+0.0000000624'}
    Thermal conductivity → {'unit': 'Q1463969', 'amount': '+100.0'}
    + 1 other property edited (see Wikidata diff for full list)
    "/* wbsetreference-set:2| */ [[Property:P5668]]: 200,587,000,000.0 pascal"
  15. 7w ago · Baum64 · 2026-08-16 view diff on Wikidata ↗
    Poisson's ratio → {'amount': '+0.25'}
    Bulk modulus → {'unit': 'Q44395', 'amount': '+200587000000.0'}
    Crystal system → face-centered cubic
    Shear modulus → {'unit': 'Q44395', 'amount': '+120256000000.0'}
    + 2 other properties edited (see Wikidata diff for full list)
    "/* wbcreateclaim-create:1| */ [[Property:P9824]]: 9010968, [[:toollabs:quickstatements/#/batch/269026|batch #269026]]"
  16. 12w ago · Nyuhn · 2026-07-10 view diff on Wikidata ↗
    P14541 → YHvdM
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/40849|batch #40849]]: ZGBK ID"
  17. 19w ago · Twofivesixbot bot · 2026-05-20 view diff on Wikidata ↗
    Vapor pressure → {'unit': 'Q6859652', 'amount': '+0'}
    On focus list of wikimedia project → Wikipedia:Vital articles/Level/4
    Has characteristic → ferromagnetism
    Subclass of → simple substance, heavy metal, allergen +1
    + 27 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-statements-multiple-properties-update:0||2 */ mv to monolingual text names on YSO statements"
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