# lutetium

> chemical element with symbol Lu and atomic number 71

**Wikidata**: [Q1857](https://www.wikidata.org/wiki/Q1857)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Lutetium)  
**Source**: https://4ort.xyz/entity/lutetium


## References

1. lutetium. Global Substance Registration System
2. [CAS Common Chemistry](https://commonchemistry.cas.org/detail?cas_rn=7439-94-3)
3. LUTETIUM. PubChem
4. ChEBI release 2020-09-01
5. Atomic weights of the elements 2009 (IUPAC Technical Report)
6. [Source](https://www.cns11643.gov.tw/wordView.jsp?ID=156714)
7. Freebase Data Dumps. 2013
8. Lutetium. ChemSpider
9. lutetium atom. ChEBI
10. Atomic weights of the elements 2013 (IUPAC Technical Report)
11. [Source](https://iupac.org/standard-atomic-weights-of-three-technology-critical-elements-revised/)
12. Lutetium. ECHA Substance Infocard database
13. UMLS 2023
14. Mapping file of InChIStrings, InChIKeys and DTXSIDs for the EPA CompTox Dashboard
15. Harmonized System
16. National Library of Israel
17. KBpedia
18. GF WordNet
19. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)
20. UniChem