# ionization energy

> minimum amount of energy required to remove an electron from an atom or molecule in the gaseous state

**Wikidata**: [Q483769](https://www.wikidata.org/wiki/Q483769)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Ionization_energy)  
**Source**: https://4ort.xyz/entity/ionization-energy


## References

1. Freebase Data Dumps. 2013
2. [Environment Ontology](https://raw.githubusercontent.com/INCATools/environments2wikidata/master/matches/curated-high-confidence-envo.tsv)
3. Quora
4. International Electrotechnical Vocabulary
5. Compendium of Chemical Terminology
6. ISO 80000-12:2019 Quantities and units — Part 12: Condensed matter physics
7. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)