# extended periodic table

> refers to the extension on the periodic table beyond its current 7 periods including additional periods

**Wikidata**: [Q428887](https://www.wikidata.org/wiki/Q428887)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Extended_periodic_table)  
**Source**: https://4ort.xyz/entity/extended-periodic-table


## References

1. Freebase Data Dumps. 2013