The Simple English Wikipedia has an article on:

francium${\displaystyle \longleftarrow }$ 88 ${\displaystyle \longrightarrow }$actinium

### Pronunciation

• Hyphenation: ra‧di‧um

## Noun

 Plural none
1. (uncountable) Radium is an element that has an atomic number of 88 and symbol Ra.
A normal person cannot find radium in any store.