# group 9

> group of chemical elements

**Wikidata**: [Q208107](https://www.wikidata.org/wiki/Q208107)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Group_9_element)  
**Source**: https://4ort.xyz/entity/group-9


## References

1. Freebase Data Dumps. 2013
2. BabelNet