# unquadtrium

> hypothetical superheavy chemical element and a placeholder name in the superactinide series with the atomic number 143

**Wikidata**: [Q3551933](https://www.wikidata.org/wiki/Q3551933)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Unquadtrium)  
**Source**: https://4ort.xyz/entity/unquadtrium