nickel(II) oxide

chemical compound
ChemicalSubstance type_of_chemical_entity Q411221
nickel(II) oxide
Ondřej Mangl · Public Domain · Wikimedia
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nickel(II) oxide

Summary

nickel(II) oxide is a type of chemical entity[1]. It ranks in the top 6% of type_of_chemical_entity entities by monthly Wikipedia readership (258 views/month).[2]

Key Facts

  • nickel(II) oxide's instance of is recorded as type of chemical entity[3].
  • nickel(II) oxide's canonical SMILES is recorded as O=[Ni][4].
  • nickel(II) oxide's chemical formula is recorded as NiO[5].
  • nickel(II) oxide is a type of nickel compound[6].
  • nickel(II) oxide is a type of oxide[7].
  • nickel(II) oxide's Commons category is recorded as Nickel(II) oxide[8].
  • nickel(II) oxide comprises oxygen[9].
  • nickel(II) oxide comprises nickel[10].
  • nickel(II) oxide's mass is recorded as {'unit': 'Q483261', 'amount': '+73.930258'}[11].
  • nickel(II) oxide's melting point is recorded as {'unit': 'Q25267', 'amount': '+1682'}[12].
  • nickel(II) oxide's subject has role is recorded as carcinogen[13].
  • nickel(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[14].

Why It Matters

nickel(II) oxide ranks in the top 6% of type_of_chemical_entity entities by monthly Wikipedia readership (258 views/month).[2] It has Wikipedia articles in 19 language editions, a strong signal of global cultural recognition.[15] It is known by 17 alternative names across languages and contexts.[16]

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] . PubChem. Retrieved . wikidata.org.
  10. [12] . wikidata.org.
  11. [13] . California Proposition 65 list of chemicals. Retrieved . oehha.ca.gov. Provenance: wikidata.org.
  12. [14] . wikidata.org.

Class ancestry

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

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [15] . Wikidata sitelinks. wikidata.org.
  3. [16] . 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). nickel(II) oxide. Retrieved May 3, 2026, from https://4ort.xyz/entity/nickel-ii-oxide
MLA “nickel(II) oxide.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/nickel-ii-oxide.
BibTeX @misc{4ortxyz_nickel-ii-oxide_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{nickel(II) oxide}}, year = {2026}, url = {https://4ort.xyz/entity/nickel-ii-oxide}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): nickel(II) oxide — https://4ort.xyz/entity/nickel-ii-oxide (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/nickel-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. 9d ago · Twofivesixbot bot · 2026-05-25 view diff on Wikidata ↗
    Instance of
    Subclass of nickel compound, oxide
    Subject has role carcinogen
    Safety classification and labelling NFPA 704: Standard System for the Identification of the Hazards of Materials for Emergency Response
    + 8 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-update-qualifiers:1||1|3 */ [[Property:P8189]]: 987007602372305171, mv to monolingual text names on J9U statements"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.