thorium

chemical element with symbol Th and atomic number 90
Thing chemical_element Q1115
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thorium

Summary

thorium is a chemical element[1]. thorium draws 75 Wikipedia views per month (chemical_element category, ranking #53 of 144).[2]

Key Facts

  • thorium is credited with the discovery of Jöns Jacob Berzelius[3].
  • thorium's instance of is recorded as chemical element[4].
  • thorium's instance of is recorded as lithophile[5].
  • Thor is named after thorium[6].
  • thorium's canonical SMILES is recorded as [Th][7].
  • thorium's element symbol is recorded as Th[8].
  • thorium's chemical formula is recorded as Th[9].
  • thorium is a type of actinide[10].
  • thorium is a type of f-block[11].
  • thorium is part of period 7[12].
  • thorium is part of actinide[13].
  • thorium's Commons category is recorded as Thorium[14].
  • thorium's Unicode character is recorded as 釷[15].
  • thorium's crystal system is recorded as face-centered cubic[16].
  • thorium's time of discovery or invention is recorded as January 1, 1828[17].
  • thorium's IPA transcription is recorded as ˈθɔːriəm[18].
  • thorium's topic's main category is recorded as Category:Thorium[19].
  • thorium's atomic number is recorded as {'amount': '+90'}[20].
  • thorium's Mohs' hardness is recorded as {'amount': '+3'}[21].
  • thorium's electronegativity is recorded as {'amount': '+1'}[22].
  • thorium's oxidation state is recorded as {'amount': '+4'}[23].
  • thorium's oxidation state is recorded as {'amount': '+3'}[24].
  • thorium's oxidation state is recorded as {'amount': '+2'}[25].
  • thorium's oxidation state is recorded as {'amount': '+1'}[26].
  • thorium's oxidation state is recorded as {'amount': '-1'}[27].

Body

Definition and Type

Recorded instance of include chemical element[4] and lithophile[5]. Recorded subclass of include actinide[10] and f-block[11].

Origins

Thor is named after thorium[6].

Use and Application

Part of include period 7[12], a period[28] and actinide[13], a chemical series[29].

Influence

Things named for thorium include thorite[30], a mineral species[31]; WKW Wilk[32], a weapon model[33], founded in 2000[34]; thorianite[35], a mineral species[36]; and althupite[37], a mineral species[38].

Why It Matters

thorium draws 75 Wikipedia views per month (chemical_element category, ranking #53 of 144).[2] thorium has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.[39] thorium is known by 50 alternative names across languages and contexts.[40]

Entities named for thorium include thorite[30], a mineral species[31]; WKW Wilk[32], a weapon model[33], founded in 2000[34]; thorianite[35], a mineral species[36]; and althupite[37], a mineral species[38].

References

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

Direct Wikidata claims

  1. [4] ↑ . wikidata.org.
  2. [5] ↑ . wikidata.org.
  3. [3] ↑ . wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [7] ↑ . wikidata.org.
  6. [8] ↑ . Atomic weights of the elements 2009 (IUPAC Technical Report). 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] ↑ . cns11643.gov.tw. Retrieved . cns11643.gov.tw. Provenance: 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. [35] ↑ . wikidata.org. → on this site
  4. [37] ↑ . 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. [34] ↑ . Wikidata. wikidata.org. → on this site
  6. [36] ↑ . Wikidata. wikidata.org. → on this site
  7. [38] ↑ . 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. [39] ↑ . Wikidata sitelinks. wikidata.org.
  3. [40] ↑ . 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). thorium. Retrieved October 3, 2026, from https://4ort.xyz/entity/thorium
MLA “thorium.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 Oct. 2026, https://4ort.xyz/entity/thorium.
BibTeX @misc{4ortxyz_thorium_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{thorium}}, year = {2026}, url = {https://4ort.xyz/entity/thorium}, note = {Accessed: 2026-10-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): thorium — https://4ort.xyz/entity/thorium (retrieved 2026-10-03)

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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': '+180'}
    Wikipedia languages → ['af', 'am', 'an', 'anp', 'ar', 'ary', 'arz', 'ast', 'az', 'ban', 'bcl', 'be', '
    P14937 → {'unit': 'Q192274', 'amount': '+206'}
    Claims rich → —
    "/* wbsetclaim-create:2||1 */ [[Property:P14936]]: 180 picometre, Add sourced P14936 element radius"
  2. 14d ago · R1F4T · 2026-09-19 view diff on Wikidata ↗
    Crystal system → face-centered cubic
    "/* wbsetclaim-create:2||1 */ [[Property:P556]]: [[Q3006714]], add crystal system from en:Template:Infobox element"
  3. 14d ago · R1F4T · 2026-09-19 view diff on Wikidata ↗
    Oxidation state → {'amount': '+4'}, {'amount': '+3'}, {'amount': '+2'} +2
    "/* wbsetclaim-create:2||1 */ [[Property:P1121]]: −1, add oxidation state from en:Template:Infobox element/symbol-to-oxidation-state"
  4. 15d ago · R1F4T · 2026-09-19 view diff on Wikidata ↗
    Ipa transcription → ˈθɔːriəm
    "/* wbsetclaim-create:2||1 */ [[Property:P898]]: ˈθɔːriəm, add IPA transcription (from en:Template:Infobox element/symbol-to-pronunciation)"
  5. 15d ago · R1F4T · 2026-09-19 view diff on Wikidata ↗
    Pronunciation audio → LL-Q1860 (eng)-Naomi Persephone Amethyst (NaomiAmethyst)-tho
    "/* wbsetclaim-create:2||1 */ [[Property:P443]]: LL-Q1860 (eng)-Naomi Persephone Amethyst (NaomiAmethyst)-thorium.wav, add English pronunciation audio (Lingua Libre, from en:Template:Infobox element/sy"
  6. 15d ago · R1F4T · 2026-09-19 view diff on Wikidata ↗
    Electron configuration → [Rn] 7s² 6d²
    "/* wbsetclaim-create:2||1 */ [[Property:P8000]]: [Rn] 7s² 6d², add electron configuration from NIST ASD ground levels"
  7. 15d ago · R1F4T · 2026-09-18 view diff on Wikidata ↗
    Subclass of → actinide, f-block
    "/* wbsetclaim-create:2||1 */ [[Property:P279]]: [[Q214680]], add periodic table block (IUPAC 2021 convention)"
  8. 15d ago · R1F4T · 2026-09-18 view diff on Wikidata ↗
    Ionization energy → {'unit': 'Q83327', 'amount': '+6.3067'}, {'unit': 'Q83327', 'amount': '+12.1'}
    "/* 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 ↗
    Has characteristic → paramagnetism
    Standard molar entropy → {'unit': 'Q20966455', 'amount': '+190.17'}, {'unit': 'Q20966455', 'amount': '+51.8'}
    Linear thermal expansion coefficient → {'unit': 'Q56025776', 'amount': '+11.54'}
    "/* wbcreateclaim-create:1| */ [[Property:P3071]]: 190.17 joule per mole kelvin, [[:toollabs:quickstatements/#/batch/270882|batch #270882]]"
  10. 5w ago · Baum64 · 2026-08-29 view diff on Wikidata ↗
    Subclass of → actinide, f-block
    "/* wbcreateclaim-create:1| */ [[Property:P279]]: [[Q19577]], [[:toollabs:quickstatements/#/batch/269656|batch #269656]]"
  11. 5w ago · Mahirtwofivesix · 2026-08-26 view diff on Wikidata ↗
    Interlingual index id → i114016
    Arabic ontology lexical concept id → 151078545
    Found in taxon → —
    "/* wbeditentity-statements-multiple-properties-update:0||3 */ added/modified IDs mapped to WordNet 3.1"
  12. 6w ago · KrBot bot · 2026-08-17 view diff on Wikidata ↗
    Electrical conductivity → {'unit': 'Q80842107', 'amount': '+6670000.0'}
    Poisson's ratio → {'amount': '+0.208'}
    Melting point → {'unit': 'Q11579', 'amount': '+2020.0'}
    Thermal conductivity → {'unit': 'Q1463969', 'amount': '+54.0'}
    + 2 other properties edited (see Wikidata diff for full list)
    "/* wbsetreference-set:2| */ [[Property:P5668]]: 55,005,000,000.0 pascal"
  13. 6w ago · Baum64 · 2026-08-16 view diff on Wikidata ↗
    Bulk modulus → {'unit': 'Q44395', 'amount': '+55005000000.0'}
    Shear modulus → {'unit': 'Q44395', 'amount': '+39908000000.0'}
    Density → {'unit': 'Q844211', 'amount': '+11986.8'}
    Cod id → 1523048
    "/* wbcreateclaim-create:1| */ [[Property:P9824]]: 1523048, [[:toollabs:quickstatements/#/batch/269026|batch #269026]]"
  14. 12w ago · Nyuhn · 2026-07-10 view diff on Wikidata ↗
    P14541 → 3xymgj, wfISm
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/40849|batch #40849]]: ZGBK ID"
  15. 20w ago · Twofivesixbot bot · 2026-05-17 view diff on Wikidata ↗
    Hrvatska enciklopedija id → torij
    "/* wbsetclaim-update-qualifiers:1||1|4 */ [[Property:P2347]]: 21744, mv to monolingual text names on YSO statements"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.