hydrogen anion

negative ion of hydrogen
ChemicalSubstance type_of_chemical_entity Q29004
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hydrogen anion

Summary

hydrogen anion is a type of chemical entity[1]. It ranks in the top 6% of type_of_chemical_entity entities by monthly Wikipedia readership (36 views/month).[2]

Key Facts

  • hydrogen anion's instance of is recorded as type of chemical entity[3].
  • hydrogen anion's CAS Registry Number is recorded as 12184-88-2[4].
  • hydrogen anion's canonical SMILES is recorded as [H-][5].
  • hydrogen anion's InChI is recorded as InChI=1S/H/q-1[6].
  • hydrogen anion's InChIKey is recorded as KLGZELKXQMTEMM-UHFFFAOYSA-N[7].
  • hydrogen anion's chemical formula is recorded as H⁻[8].
  • hydrogen anion's subclass of is recorded as monoanion[9].
  • hydrogen anion's subclass of is recorded as monoatomic anion[10].
  • hydrogen anion's subclass of is recorded as hydrogen ion[11].
  • hydrogen anion's Commons category is recorded as Hydride ion[12].
  • hydrogen anion's has part is recorded as hydrogen[13].
  • hydrogen anion's Freebase ID is recorded as /m/02qvm_m[14].
  • hydrogen anion's ChemSpider ID is recorded as 145831[15].
  • hydrogen anion's PubChem CID is recorded as 166653[16].
  • hydrogen anion's ChEBI ID is recorded as 29239[17].
  • hydrogen anion's Gmelin number is recorded as 14911[18].
  • hydrogen anion's mass is recorded as {'unit': 'Q483261', 'amount': '+1.007825'}[19].
  • hydrogen anion's DSSTox substance ID is recorded as DTXSID6075306[20].
  • hydrogen anion's conjugate acid is recorded as dihydrogen[21].
  • hydrogen anion's Great Norwegian Encyclopedia ID is recorded as hydridion[22].
  • hydrogen anion's Microsoft Academic ID is recorded as 2776130283[23].
  • hydrogen anion's DSSTOX compound identifier is recorded as DTXCID3033721[24].
  • hydrogen anion's UniChem compound ID is recorded as 1100479[25].
  • hydrogen anion's CAMEO Chemicals ID is recorded as 3592[26].

Why It Matters

hydrogen anion ranks in the top 6% of type_of_chemical_entity entities by monthly Wikipedia readership (36 views/month).[2] It has Wikipedia articles in 12 language editions, a strong signal of global cultural recognition.[27] It is known by 11 alternative names across languages and contexts.[28]

References

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

Direct Wikidata claims

  1. [3] . wikidata.org.
  2. [4] . CAS Common Chemistry. Retrieved . commonchemistry.cas.org. Provenance: wikidata.org.
  3. [5] . PubChem. Retrieved . wikidata.org.
  4. [6] . PubChem. Retrieved . wikidata.org.
  5. [7] . PubChem. Retrieved . wikidata.org.
  6. [8] . PubChem. Retrieved . 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] . Q2311683. Retrieved . wikidata.org.
  14. [16] . PubChem. Retrieved . wikidata.org.
  15. [17] . wikidata.org.
  16. [18] . wikidata.org.
  17. [19] . PubChem. Retrieved . wikidata.org.
  18. [20] . Mapping file of InChIStrings, InChIKeys and DTXSIDs for the EPA CompTox Dashboard. wikidata.org.
  19. [21] . wikidata.org.
  20. [22] . wikidata.org.
  21. [23] . wikidata.org.
  22. [24] . wikidata.org.
  23. [25] . UniChem. wikidata.org.
  24. [26] . wikidata.org.

Class ancestry

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

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [27] . Wikidata sitelinks. wikidata.org.
  3. [28] . 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). hydrogen anion. Retrieved May 3, 2026, from https://4ort.xyz/entity/hydrogen-anion
MLA “hydrogen anion.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/hydrogen-anion.
BibTeX @misc{4ortxyz_hydrogen-anion_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{hydrogen anion}}, year = {2026}, url = {https://4ort.xyz/entity/hydrogen-anion}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): hydrogen anion — https://4ort.xyz/entity/hydrogen-anion (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/hydrogen-anion · 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. 23d ago · Wostr · 2026-05-05 view diff on Wikidata ↗
    Conjugate acid dihydrogen
    Subclass of monoanion, monoatomic anion, hydrogen ion
    Subclass of
    Has parts
    + 5 other properties edited (see Wikidata diff for full list)
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