technetium-99

radioactive isotope of technetium produced by fission of uranium
Thing isotope_of_technetium Q1961418
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technetium-99

Summary

technetium-99 is an isotope of technetium[1]. technetium-99 draws 133 Wikipedia views per month (isotope_of_technetium category, ranking #1 of 2).[2]

Key Facts

  • technetium-99's instance of is recorded as isotope of technetium[3].
  • technetium-99's CAS Registry Number is recorded as 14133-76-7[4].
  • technetium-99's canonical SMILES is recorded as [Tc][5].
  • technetium-99's InChIKey is recorded as GKLVYJBZJHMRIY-OUBTZVSYSA-N[6].
  • technetium-99's chemical formula is recorded as Tc[7].
  • technetium-99's subclass of is recorded as technetium[8].
  • technetium-99's part of is recorded as period 5[9].
  • technetium-99's Freebase ID is recorded as /m/05_df1l[10].
  • technetium-99's UNII is recorded as 6EW75241VU[11].
  • technetium-99's PubChem CID is recorded as 26476[12].
  • technetium-99's ChEBI ID is recorded as 33371[13].
  • technetium-99's DrugBank ID is recorded as DB14227[14].
  • technetium-99's decays to is recorded as ruthenium-99[15].
  • technetium-99's atomic number is recorded as {'amount': '+43'}[16].
  • technetium-99's spin quantum number is recorded as {'amount': '+4.5'}[17].
  • technetium-99's parity quantum number is recorded as {'amount': '+1'}[18].
  • technetium-99's neutron number is recorded as {'amount': '+56'}[19].
  • technetium-99's Encyclopædia Britannica Online ID is recorded as science/technetium-99[20].
  • technetium-99's Gmelin number is recorded as 41657[21].
  • technetium-99's mass is recorded as {'unit': 'Q483261', 'amount': '+98.906249678'}[22].
  • technetium-99's half-life is recorded as {'unit': 'Q1092296', 'amount': '+211100.0'}[23].
  • technetium-99's binding energy is recorded as {'unit': 'Q28719934', 'amount': '+852747.39'}[24].
  • technetium-99's mass excess is recorded as {'unit': 'Q28719934', 'amount': '-87327.862'}[25].
  • technetium-99's SureChEMBL ID is recorded as 1649648[26].
  • technetium-99's DSSTox substance ID is recorded as DTXSID00874006[27].

Why It Matters

technetium-99 draws 133 Wikipedia views per month (isotope_of_technetium category, ranking #1 of 2).[2] technetium-99 has Wikipedia articles in 8 language editions, a strong signal of global cultural recognition.[28] technetium-99 is known by 11 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] . ChemIDplus. Retrieved . chem.nlm.nih.gov. Provenance: wikidata.org.
  3. [5] . ChEBI. Retrieved . wikidata.org.
  4. [6] . ChEBI release 2020-09-01. wikidata.org.
  5. [7] . PubChem. Retrieved . wikidata.org.
  6. [8] . wikidata.org.
  7. [9] . wikidata.org.
  8. [10] . Freebase Data Dumps. wikidata.org.
  9. [11] . wikidata.org.
  10. [12] . PubChem. Retrieved . wikidata.org.
  11. [13] . ChEBI. Retrieved . wikidata.org.
  12. [14] . wikidata.org.
  13. [15] . NuDat. Retrieved . nndc.bnl.gov. Provenance: wikidata.org.
  14. [16] . wikidata.org.
  15. [17] . NuDat. Retrieved . nndc.bnl.gov. Provenance: wikidata.org.
  16. [18] . NuDat. Retrieved . nndc.bnl.gov. Provenance: wikidata.org.
  17. [19] . wikidata.org.
  18. [20] . wikidata.org.
  19. [21] . wikidata.org.
  20. [22] . The AME2016 atomic mass evaluation (I). Evaluation of input data; and adjustment procedures. Retrieved . amdc.in2p3.fr. Provenance: wikidata.org.
  21. [23] . NuDat. Retrieved . nndc.bnl.gov. Provenance: wikidata.org.
  22. [24] . The AME2016 atomic mass evaluation (I). Evaluation of input data; and adjustment procedures. Retrieved . amdc.in2p3.fr. Provenance: wikidata.org.
  23. [25] . The AME2016 atomic mass evaluation (I). Evaluation of input data; and adjustment procedures. Retrieved . amdc.in2p3.fr. Provenance: wikidata.org.
  24. [26] . wikidata.org.
  25. [27] . 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). technetium-99. Retrieved May 3, 2026, from https://4ort.xyz/entity/technetium-99
MLA “technetium-99.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/technetium-99.
BibTeX @misc{4ortxyz_technetium-99_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{technetium-99}}, year = {2026}, url = {https://4ort.xyz/entity/technetium-99}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): technetium-99 — https://4ort.xyz/entity/technetium-99 (retrieved 2026-05-03)

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