radium

francium$\longleftarrow$ 88 $\longrightarrow$actinium

Pronunciation

• (US) enPR: rād'ēəm, IPA ^(key): /ˈreɪ.di.əm/
• (UK) IPA ^(key): /ˈreɪ.dɪ.əm/

• Audio (UK)

  (file)

• Hyphenation: rad‧i‧um

Noun

Singular radium

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.