# 18-electron rule

> rule used primarily for predicting formulae for stable metal complexes

**Wikidata**: [Q200104](https://www.wikidata.org/wiki/Q200104)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/18-electron_rule)  
**Source**: https://4ort.xyz/entity/18-electron-rule


## References

1. Freebase Data Dumps. 2013