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mercury(II) oxide

chemical compound
ChemicalSubstance type_of_chemical_entity Q174727
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mercury(II) oxide

Summary

mercury(II) oxide is a type of chemical entity[1]. It ranks in the top 5% of type_of_chemical_entity entities by monthly Wikipedia readership (291 views/month).[2]

Key Facts

  • mercury(II) oxide's instance of is recorded as type of chemical entity[3].
  • mercury(II) oxide's canonical SMILES is recorded as O=[Hg][4].
  • mercury(II) oxide's chemical formula is recorded as HgO[5].
  • mercury(II) oxide is a type of binary compound[6].
  • mercury(II) oxide's Commons category is recorded as Mercury(II) oxide[7].
  • mercury(II) oxide's said to be the same as is recorded as montroydite[8].
  • mercury(II) oxide's color is recorded as red-orange[9].
  • mercury(II) oxide comprises oxygen[10].
  • mercury(II) oxide comprises mercury[11].
  • mercury(II) oxide's described by source is recorded as Meyers Konversations-Lexikon, 4th edition (1885–1890)[12].
  • mercury(II) oxide's density is recorded as {'unit': 'Q13147228', 'amount': '+11.14'}[13].
  • mercury(II) oxide's mass is recorded as {'unit': 'Q483261', 'amount': '+217.965558'}[14].
  • mercury(II) oxide's standard enthalpy of formation is recorded as {'unit': 'Q752197', 'amount': '+90.458'}[15].
  • mercury(II) oxide's safety classification and labelling is recorded as NFPA 704: Standard System for the Identification of the Hazards of Materials for Emergency Response[16].

Why It Matters

mercury(II) oxide ranks in the top 5% of type_of_chemical_entity entities by monthly Wikipedia readership (291 views/month).[2] It has Wikipedia articles in 25 language editions, a strong signal of global cultural recognition.[17] It is known by 5 alternative names across languages and contexts.[18]

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] ↑ . wikidata.org.
  11. [13] ↑ . wikidata.org.
  12. [14] ↑ . PubChem. Retrieved . wikidata.org.
  13. [15] ↑ . wikidata.org.
  14. [16] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [17] ↑ . Wikidata sitelinks. wikidata.org.
  3. [18] ↑ . 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). mercury(II) oxide. Retrieved May 3, 2026, from https://4ort.xyz/entity/mercury-ii-oxide
MLA “mercury(II) oxide.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/mercury-ii-oxide.
BibTeX @misc{4ortxyz_mercury-ii-oxide_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{mercury(II) oxide}}, year = {2026}, url = {https://4ort.xyz/entity/mercury-ii-oxide}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): mercury(II) oxide — https://4ort.xyz/entity/mercury-ii-oxide (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/mercury-ii-oxide · 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. 10d ago · Twofivesixbot bot · 2026-05-24 view diff on Wikidata ↗
    Instance of → type of chemical entity
    Safety classification and labelling → NFPA 704: Standard System for the Identification of the Hazards of Materials for Emergency Response
    Said to be the same as → montroydite
    Mass → {'unit': 'Q483261', 'amount': '+217.965558'}
    + 10 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-update-qualifiers:1||1|3 */ [[Property:P8189]]: 987007565662205171, mv to monolingual text names on J9U statements"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.