# oxygen-21

> isotope of oxygen

**Wikidata**: [Q15135440](https://www.wikidata.org/wiki/Q15135440)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Oxygen-21)  
**Source**: https://4ort.xyz/entity/oxygen-21


## References

1. [Source](http://www.nndc.bnl.gov/chart/reCenter.jsp?z=8&n=13)
2. [NuDat](http://www.nndc.bnl.gov/nudat2/reCenter.jsp?z=8&n=13)
3. [NuDat](http://www.nndc.bnl.gov/nudat2/reCenter.jsp?n=13&z=8)
4. [The AME2016 atomic mass evaluation (I). Evaluation of input data; and adjustment procedures](http://amdc.in2p3.fr/masstables/Ame2016/mass16.txt)
5. [National Nuclear Data Center](http://www.nndc.bnl.gov/nudat2/reCenter.jsp?z=8&n=13)