radium

chemical element with symbol Ra and atomic number 88
Thing chemical_element Q1128
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radium

Summary

radium is a chemical element[1]. radium draws 1,330 Wikipedia views per month (chemical_element category, ranking #26 of 144).[2]

Key Facts

  • radium is credited with the discovery of Marie Curie[3].
  • radium is credited with the discovery of Pierre Curie[4].
  • radium's instance of is recorded as chemical element[5].
  • radioactivity is named after radium[6].
  • radium's canonical SMILES is recorded as [Ra][7].
  • radium's element symbol is recorded as Ra[8].
  • radium's chemical formula is recorded as Ra[9].
  • radium is a type of alkaline earth metal[10].
  • radium is a type of s-block[11].
  • radium is part of period 7[12].
  • radium is part of alkaline earth metal[13].
  • radium's Commons category is recorded as Radium[14].
  • radium's Unicode character is recorded as 鐳[15].
  • radium's crystal system is recorded as body-centered cubic[16].
  • radium's time of discovery or invention is recorded as 1898[17].
  • radium's point group is recorded as cubic-hexoctahedral[18].
  • radium's space group is recorded as space group Im-3m[19].
  • radium's IPA transcription is recorded as ˈreɪdiəm[20].
  • radium's topic's main category is recorded as Category:Radium[21].
  • radium's Commons gallery is recorded as Radium[22].
  • radium's atomic number is recorded as {'amount': '+88'}[23].
  • radium's electronegativity is recorded as {'amount': '+0.9'}[24].
  • radium's oxidation state is recorded as {'amount': '+2'}[25].
  • radium's described by source is recorded as Armenian Soviet Encyclopedia[26].
  • radium's described by source is recorded as Brockhaus and Efron Encyclopedic Dictionary[27].

Body

Definition and Type

radium's instance of is recorded as chemical element[5]. Recorded subclass of include alkaline earth metal[10] and s-block[11].

Origins

radioactivity is named after radium[6].

Use and Application

Part of include period 7[12], a period[28] and alkaline earth metal[13], a group[29].

Influence

Things named for radium include Radium Girls[30], a group of women[31], in United States[32]; radon[33], a chemical element[34]; and Radium Hot Springs[35], a village[36], in Canada[37].

Why It Matters

radium draws 1,330 Wikipedia views per month (chemical_element category, ranking #26 of 144).[2] radium has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.[38] radium is known by 43 alternative names across languages and contexts.[39]

Entities named for radium include Radium Girls[30], a group of women[31], in United States[32]; radon[33], a chemical element[34]; and Radium Hot Springs[35], a village[36], in Canada[37].

References

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

Direct Wikidata claims

  1. [5] ↑ . wikidata.org.
  2. [3] ↑ . wikidata.org.
  3. [4] ↑ . wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [7] ↑ . PubChem. Retrieved . wikidata.org.
  6. [8] ↑ . Atomic weights of the elements 2009 (IUPAC Technical Report). wikidata.org.
  7. [9] ↑ . PubChem. Retrieved . 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] ↑ . rsc.org. rsc.org. Provenance: 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. [33] ↑ . wikidata.org. → on this site
  3. [35] ↑ . 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. [32] ↑ . Wikidata. wikidata.org. → on this site
  5. [34] ↑ . Wikidata. wikidata.org. → on this site
  6. [36] ↑ . Wikidata. wikidata.org. → on this site
  7. [37] ↑ . 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. [38] ↑ . Wikidata sitelinks. wikidata.org.
  3. [39] ↑ . 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). radium. Retrieved October 3, 2026, from https://4ort.xyz/entity/radium
MLA “radium.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 Oct. 2026, https://4ort.xyz/entity/radium.
BibTeX @misc{4ortxyz_radium_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{radium}}, year = {2026}, url = {https://4ort.xyz/entity/radium}, note = {Accessed: 2026-10-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): radium — https://4ort.xyz/entity/radium (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. 15h ago · R1F4T · 2026-10-03 view diff on Wikidata ↗
    P14936 → {'unit': 'Q192274', 'amount': '+215'}
    Wikipedia languages → ['af', 'als', 'am', 'an', 'anp', 'ar', 'ary', 'arz', 'ast', 'az', 'azb', 'ba', '
    P14937 → {'unit': 'Q192274', 'amount': '+221'}
    Claims rich → —
    "/* wbsetreference-add:2| */ [[Property:P14936]]: 215 picometre, Add DOI reference for imported element radius"
  2. 14d ago · R1F4T · 2026-09-19 view diff on Wikidata ↗
    Mass → {'unit': 'Q483261', 'amount': '+226.0254103'}
    "/* wbsetclaim-create:2||1 */ [[Property:P2067]]: 226.0254103±0.0000025 dalton, add the mass of the longest-lived isotope (AME via NIST)"
  3. 14d ago · R1F4T · 2026-09-19 view diff on Wikidata ↗
    Ipa transcription → ˈreɪdiəm
    "/* wbsetclaim-create:2||1 */ [[Property:P898]]: ˈreɪdiəm, add IPA transcription (from en:Template:Infobox element/symbol-to-pronunciation)"
  4. 14d ago · R1F4T · 2026-09-19 view diff on Wikidata ↗
    Pronunciation audio → LL-Q1860 (eng)-Naomi Persephone Amethyst (NaomiAmethyst)-rad
    "/* wbsetclaim-create:2||1 */ [[Property:P443]]: LL-Q1860 (eng)-Naomi Persephone Amethyst (NaomiAmethyst)-radium.wav, add English pronunciation audio (Lingua Libre, from en:Template:Infobox element/sym"
  5. 15d ago · R1F4T · 2026-09-18 view diff on Wikidata ↗
    Subclass of → alkaline earth metal, s-block
    "/* wbsetclaim-create:2||1 */ [[Property:P279]]: [[Q208106]], add periodic table block (IUPAC 2021 convention)"
  6. 15d ago · R1F4T · 2026-09-18 view diff on Wikidata ↗
    Ionization energy → {'unit': 'Q83327', 'amount': '+5.2784239'}, {'unit': 'Q83327', 'amount': '+10.14718'}, {'unit': 'Q83327', 'amount': '+31.0'}
    "/* wbeditentity-statements-single-property-add:1||3 */ [[Property:P2260]], import ionization energy from NIST Atomic Spectra Database"
  7. 28d ago · Baum64 · 2026-09-05 view diff on Wikidata ↗
    Point group → cubic-hexoctahedral
    "/* wbcreateclaim-create:1| */ [[Property:P589]]: [[Q13359931]], [[:toollabs:quickstatements/#/batch/270882|batch #270882]]"
  8. 5w ago · Baum64 · 2026-08-29 view diff on Wikidata ↗
    Subclass of → alkaline earth metal, s-block
    "/* wbcreateclaim-create:1| */ [[Property:P279]]: [[Q19563]], [[:toollabs:quickstatements/#/batch/269656|batch #269656]]"
  9. 5w ago · Mahirtwofivesix · 2026-08-26 view diff on Wikidata ↗
    Babelnet id → 00006920n
    Interlingual index id → i113992
    Arabic ontology lexical concept id → 151078521
    "/* wbeditentity-statements-multiple-properties-update:0||4 */ added/modified IDs mapped to WordNet 3.1"
  10. 6w ago · KrBot bot · 2026-08-17 view diff on Wikidata ↗
    Electrical conductivity → {'unit': 'Q80842107', 'amount': '+1000000.0'}
    Electrical resistivity → {'unit': 'Q1441459', 'amount': '+0.000001'}
    Thermal conductivity → {'unit': 'Q1463969', 'amount': '+19.0'}
    "/* wbsetreference-set:2| */ [[Property:P690]]: [[Q15041897]]"
  11. 6w ago · Baum64 · 2026-08-16 view diff on Wikidata ↗
    Melting point → {'unit': 'Q11579', 'amount': '+973.0'}
    Crystal system → body-centered cubic
    Space group → space group Im-3m
    Boiling point → {'unit': 'Q11579', 'amount': '+2010.0'}
    + 2 other properties edited (see Wikidata diff for full list)
    "/* wbcreateclaim-create:1| */ [[Property:P9824]]: 1509139, [[:toollabs:quickstatements/#/batch/269026|batch #269026]]"
  12. 12w ago · Nyuhn · 2026-07-10 view diff on Wikidata ↗
    P14541 → 14TRzp
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/40849|batch #40849]]: ZGBK ID"
  13. 15w ago · Susmuffin · 2026-06-15 view diff on Wikidata ↗
    Harper's tag → radium
    "/* wbsetclaim-create:1||1 */ [[Property:P13772]]: radium, Matched to [[:toollabs:mix-n-match/#/entry/289953344|radium (#289953344)]] in [[:toollabs:mix-n-match/#/catalog/7915|Harper's tag]] #mix'n'mat"
  14. 19w ago · Twofivesixbot bot · 2026-05-17 view diff on Wikidata ↗
    Hrvatska enciklopedija id → radij
    "/* wbsetclaim-update-qualifiers:1||1|4 */ [[Property:P2347]]: 19781, mv to monolingual text names on YSO statements"
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