hydronium

aqueous cation H₃O⁺, the type of oxonium ion produced by protonation of water
ChemicalSubstance type_of_chemical_entity Q849881
Press Enter · cited answer in seconds

hydronium

Summary

hydronium is a type of chemical entity[1]. hydronium has Wikipedia articles in 26 language editions, a strong signal of global cultural recognition.[2]

Key Facts

  • hydronium's instance of is recorded as type of chemical entity[3].
  • hydronium's canonical SMILES is recorded as [OH3+][4].
  • hydronium's chemical formula is recorded as H₃O⁺[5].
  • hydronium is a type of oxonium[6].
  • hydronium is a type of onium monocation[7].
  • hydronium is a type of lyonium ion[8].
  • hydronium's Commons category is recorded as Hydronium ion[9].
  • hydronium comprises hydrogen[10].
  • hydronium comprises oxygen[11].
  • hydronium's pKa is recorded as {'amount': '+0.00'}[12].
  • hydronium's described by source is recorded as Armenian Soviet Encyclopedia, vol. 6[13].
  • hydronium's different from is recorded as hydron[14].
  • hydronium's different from is recorded as proton[15].
  • hydronium's different from is recorded as diaquahydrogen(1+)[16].
  • hydronium's different from is recorded as Eigen cation[17].
  • hydronium's mass is recorded as {'unit': 'Q483261', 'amount': '+19.01839'}[18].
  • hydronium's conjugate acid is recorded as tetrahydridooxygen(2+)[19].
  • hydronium's conjugate base is recorded as water[20].

Why It Matters

hydronium has Wikipedia articles in 26 language editions, a strong signal of global cultural recognition.[2] hydronium is known by 85 alternative names across languages and contexts.[21]

References

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

Direct Wikidata claims

  1. [3] . wikidata.org.
  2. [4] . PubChem. Retrieved . wikidata.org.
  3. [5] . PubChem. Retrieved . 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] . Binas (2nd edition). wikidata.org.
  11. [13] . wikidata.org.
  12. [14] . wikidata.org.
  13. [15] . wikidata.org.
  14. [16] . wikidata.org.
  15. [17] . wikidata.org.
  16. [18] . PubChem. Retrieved . wikidata.org.
  17. [19] . wikidata.org.
  18. [20] . wikidata.org.

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] . Wikidata sitelinks. wikidata.org.
  2. [21] . 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). hydronium. Retrieved May 3, 2026, from https://4ort.xyz/entity/hydronium
MLA “hydronium.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/hydronium.
BibTeX @misc{4ortxyz_hydronium_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{hydronium}}, year = {2026}, url = {https://4ort.xyz/entity/hydronium}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): hydronium — https://4ort.xyz/entity/hydronium (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/hydronium · 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. 6d ago · Д.Ильин · 2026-07-08 view diff on Wikidata ↗
    Aliases
    Has parts
    Has part(s) hydrogen, oxygen
    Different from hydron, proton, diaquahydrogen(1+) +1
    + 10 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-update:2||1 */ [[Property:P117]]: Hydroxonium-cation.svg"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.