potassium-40

isotope of potassium
Thing isotope_of_potassium Q2251076
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potassium-40

Summary

potassium-40 is an isotope of potassium[1]. potassium-40 draws 398 Wikipedia views per month (isotope_of_potassium category, ranking #1 of 1).[2]

Key Facts

  • potassium-40's image is recorded as Potassium-40.svg[3].
  • potassium-40's instance of is recorded as isotope of potassium[4].
  • potassium-40's CAS Registry Number is recorded as 13966-00-2[5].
  • potassium-40's canonical SMILES is recorded as [K][6].
  • potassium-40's InChI is recorded as InChI=1S/K/i1+1[7].
  • potassium-40's InChIKey is recorded as ZLMJMSJWJFRBEC-OUBTZVSYSA-N[8].
  • potassium-40's chemical formula is recorded as K[9].
  • potassium-40's subclass of is recorded as potassium[10].
  • potassium-40's Freebase ID is recorded as /m/09glq9c[11].
  • potassium-40's UNII is recorded as A720OX923I[12].
  • potassium-40's ChemSpider ID is recorded as 4886606[13].
  • potassium-40's PubChem CID is recorded as 6328542[14].
  • potassium-40's decays to is recorded as argon-40[15].
  • potassium-40's decays to is recorded as calcium-40[16].
  • potassium-40's atomic number is recorded as {'amount': '+19'}[17].
  • potassium-40's spin quantum number is recorded as {'amount': '+4.0'}[18].
  • potassium-40's parity quantum number is recorded as {'amount': '-1'}[19].
  • potassium-40's neutron number is recorded as {'amount': '+21'}[20].
  • potassium-40's Encyclopædia Britannica Online ID is recorded as science/potassium-40[21].
  • potassium-40's isomeric SMILES is recorded as [40K][22].
  • potassium-40's mass is recorded as {'unit': 'Q483261', 'amount': '+39.963998166'}[23].
  • potassium-40's mass is recorded as {'unit': 'Q483261', 'amount': '+39.964'}[24].
  • potassium-40's half-life is recorded as {'unit': 'Q1092296', 'amount': '+1248000000'}[25].
  • potassium-40's binding energy is recorded as {'unit': 'Q28719934', 'amount': '+341523.6'}[26].
  • potassium-40's mass excess is recorded as {'unit': 'Q28719934', 'amount': '-33535.492'}[27].

Why It Matters

potassium-40 draws 398 Wikipedia views per month (isotope_of_potassium category, ranking #1 of 1).[2] potassium-40 has Wikipedia articles in 17 language editions, a strong signal of global cultural recognition.[28] potassium-40 is known by 9 alternative names across languages and contexts.[29]

References

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

Direct Wikidata claims

  1. [3] . wikidata.org.
  2. [4] . wikidata.org.
  3. [5] . Global Substance Registration System. Retrieved . commonchemistry.cas.org. Provenance: wikidata.org.
  4. [6] . PubChem. Retrieved . wikidata.org.
  5. [7] . PubChem. Retrieved . wikidata.org.
  6. [8] . PubChem. Retrieved . wikidata.org.
  7. [9] . PubChem. Retrieved . wikidata.org.
  8. [10] . wikidata.org.
  9. [11] . Freebase Data Dumps. wikidata.org.
  10. [12] . Global Substance Registration System. Retrieved . wikidata.org.
  11. [13] . Q2311683. Retrieved . wikidata.org.
  12. [14] . PubChem. Retrieved . wikidata.org.
  13. [15] . NuDat. Retrieved . nndc.bnl.gov. Provenance: wikidata.org.
  14. [16] . NuDat. Retrieved . nndc.bnl.gov. Provenance: wikidata.org.
  15. [17] . wikidata.org.
  16. [18] . NuDat. Retrieved . nndc.bnl.gov. Provenance: wikidata.org.
  17. [19] . NuDat. Retrieved . nndc.bnl.gov. Provenance: wikidata.org.
  18. [20] . wikidata.org.
  19. [21] . wikidata.org.
  20. [22] . PubChem. Retrieved . wikidata.org.
  21. [23] . The AME2016 atomic mass evaluation (I). Evaluation of input data; and adjustment procedures. Retrieved . amdc.in2p3.fr. Provenance: wikidata.org.
  22. [24] . PubChem. Retrieved . wikidata.org.
  23. [25] . nndc.bnl.gov. nndc.bnl.gov. Provenance: wikidata.org.
  24. [26] . The AME2016 atomic mass evaluation (I). Evaluation of input data; and adjustment procedures. Retrieved . amdc.in2p3.fr. Provenance: wikidata.org.
  25. [27] . The AME2016 atomic mass evaluation (I). Evaluation of input data; and adjustment procedures. Retrieved . amdc.in2p3.fr. Provenance: wikidata.org.

Class ancestry

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

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [28] . Wikidata sitelinks. wikidata.org.
  3. [29] . 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). potassium-40. Retrieved May 3, 2026, from https://4ort.xyz/entity/potassium-40
MLA “potassium-40.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/potassium-40.
BibTeX @misc{4ortxyz_potassium-40_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{potassium-40}}, year = {2026}, url = {https://4ort.xyz/entity/potassium-40}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): potassium-40 — https://4ort.xyz/entity/potassium-40 (retrieved 2026-05-03)

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