# hydrogen

> chemical element with symbol H and atomic number 1

**Wikidata**: [Q556](https://www.wikidata.org/wiki/Q556)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Hydrogen)  
**Source**: https://4ort.xyz/entity/hydrogen


## References

1. [Hydrogen, atomic. ChemIDplus](https://chem.nlm.nih.gov/chemidplus/rn/12385-13-6)
2. Atomic weights of the elements 2009 (IUPAC Technical Report)
3. Nuovo soggettario
4. Freebase Data Dumps. 2013
5. HYDROGEN. ChemSpider
6. [Source](https://www.wolframalpha.com/input/?i=Entity%5B%22Element%22,+%22Hydrogen%22%5D)
7. [WebElements](https://www.webelements.com/hydrogen/physics.html)
8. [Inorganic chemistry. 2001](https://books.google.com/books?id=vEwj1WZKThEC&pg=PA240)
9. Standard atomic weights of the elements 2021 (IUPAC Technical Report). Pure and Applied Chemistry
10. YSO-Wikidata mapping project
11. BabelNet
12. UMLS 2023
13. [Source](https://golden.com/wiki/Hydrogen-B6Z9)
14. FactGrid
15. National Library of Israel
16. CC 6
17. KBpedia
18. GF WordNet
19. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)