calcium

chemical element with symbol Ca and atomic number 20
Thing chemical_element Q706
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calcium

Summary

calcium is a chemical element[1]. calcium draws 2,661 Wikipedia views per month (chemical_element category, ranking #50 of 144).[2]

Key Facts

  • calcium is credited with the discovery of Humphry Davy[3].
  • calcium's instance of is recorded as chemical element[4].
  • calcium's instance of is recorded as lithophile[5].
  • calcium's instance of is recorded as active metal[6].
  • lime is named after calcium[7].
  • calcium's canonical SMILES is recorded as [Ca][8].
  • calcium's element symbol is recorded as Ca[9].
  • calcium's chemical formula is recorded as Ca[10].
  • calcium is a type of alkaline earth metal[11].
  • calcium is part of period 4[12].
  • calcium is part of alkaline earth metal[13].
  • calcium is used for essential medicine[14].
  • calcium's Commons category is recorded as Calcium[15].
  • calcium's Unicode character is recorded as 鈣[16].
  • calcium's time of discovery or invention is recorded as 1808[17].
  • calcium's found in taxon is recorded as Foeniculum vulgare[18].
  • calcium's found in taxon is recorded as cacao[19].
  • calcium's found in taxon is recorded as Chlorella pyrenoidosa[20].
  • calcium's found in taxon is recorded as Chlorella vulgaris[21].
  • calcium's found in taxon is recorded as Auxenochlorella pyrenoidosa[22].
  • calcium's found in taxon is recorded as Euphorbia lancifolia[23].
  • calcium's found in taxon is recorded as Montanoa tomentosa[24].
  • calcium's found in taxon is recorded as Montanoa frutescens[25].
  • calcium's found in taxon is recorded as Montanoa leucantha[26].
  • calcium's found in taxon is recorded as Montanoa grandiflora[27].

Body

Definition and Type

Recorded instance of include chemical element[4], lithophile[5], and active metal[6]. calcium is a type of alkaline earth metal[11].

Origins

lime is named after calcium[7].

Use and Application

calcium is used for essential medicine[14]. Part of include period 4[12], a period[28] and alkaline earth metal[13], a group[29].

Influence

Things named for calcium include cavansite[30], a mineral species[31]; barytocalcite[32], a mineral species[33]; canasite[34], a mineral species[35]; Calcium[36], a census-designated place in the United States[37], in United States[38]; calclacite[39], a mineral species[40]; cafarsite[41], a mineral species[42]; chlorocalcite[43], a mineral species[44]; and gismondine-Ca[45], a mineral species[46].

Why It Matters

calcium draws 2,661 Wikipedia views per month (chemical_element category, ranking #50 of 144).[2] calcium has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.[47] calcium is known by 44 alternative names across languages and contexts.[48]

Entities named for calcium include cavansite[30], a mineral species[31]; barytocalcite[32], a mineral species[33]; canasite[34], a mineral species[35]; Calcium[36], a census-designated place in the United States[37], in United States[38]; calclacite[39], a mineral species[40]; and cafarsite[41], a mineral species[42].

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. [6] . wikidata.org.
  4. [3] . wikidata.org.
  5. [7] . wikidata.org.
  6. [8] . PubChem. Retrieved . wikidata.org.
  7. [9] . Atomic weights of the elements 2009 (IUPAC Technical Report). wikidata.org.
  8. [10] . PubChem. Retrieved . wikidata.org.
  9. [11] . wikidata.org.
  10. [12] . wikidata.org.
  11. [13] . wikidata.org.
  12. [14] . wikidata.org.
  13. [15] . wikidata.org.
  14. [16] . cns11643.gov.tw. Retrieved . cns11643.gov.tw. Provenance: wikidata.org.
  15. [17] . wikidata.org.
  16. [18] . Effect of oral administration of fennel (Foeniculum vulgare) on ciprofloxacin absorption and disposition in the rat. wikidata.org.
  17. [19] . Constituents of Cocoa Husks. wikidata.org.
  18. [20] . Preventing dyslipidemia by Chlorella pyrenoidosa in rats and hamsters after chronic high fat diet treatment. wikidata.org.
  19. [21] . Preventing dyslipidemia by Chlorella pyrenoidosa in rats and hamsters after chronic high fat diet treatment. wikidata.org.
  20. [22] . Preventing dyslipidemia by Chlorella pyrenoidosa in rats and hamsters after chronic high fat diet treatment. wikidata.org.
  21. [23] . A neglected Mayan galactagogue - ixbut (Euphorbia lancifolia).. wikidata.org.
  22. [24] . The zoapatle III--biological and uterotonic properties of aqueous plant extract. wikidata.org.
  23. [25] . The zoapatle III--biological and uterotonic properties of aqueous plant extract. wikidata.org.
  24. [26] . The zoapatle III--biological and uterotonic properties of aqueous plant extract. wikidata.org.
  25. [27] . The zoapatle III--biological and uterotonic properties of aqueous plant extract. 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. [39] . wikidata.org. → on this site
  6. [41] . wikidata.org. → on this site
  7. [43] . wikidata.org. → on this site
  8. [45] . 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. [38] . Wikidata. wikidata.org. → on this site
  8. [40] . Wikidata. wikidata.org. → on this site
  9. [42] . Wikidata. wikidata.org. → on this site
  10. [44] . Wikidata. wikidata.org. → on this site
  11. [46] . 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. [47] . Wikidata sitelinks. wikidata.org.
  3. [48] . Wikidata aliases. wikidata.org.

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APA 4ort.xyz Knowledge Graph. (2026). calcium. Retrieved May 3, 2026, from https://4ort.xyz/entity/calcium
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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. 4d ago · Ponor · 2026-05-16 view diff on Wikidata ↗
    Electrical conductivity {'unit': 'Q20966435', 'amount': '+28200000'}
    Discoverer or inventor Humphry Davy
    Subclass of alkaline earth metal
    Topic's main category Category:Calcium
    + 25 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/31836|batch #31836]]: Hrvatska enciklopedija"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.