# Mendeleev's predicted elements

> elements predicted to exist but not yet found on the first periodic table

**Wikidata**: [Q428940](https://www.wikidata.org/wiki/Q428940)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Mendeleev's_predicted_elements)  
**Source**: https://4ort.xyz/entity/mendeleev-s-predicted-elements