radioactinium

Questions

What does radioactinium mean?

The radioactive isotope of actinium, 22789Ac, having a half-life of 21.7 years

Where does radioactinium come from?

From radio- + actinium.

How to pronounce radioactinium

1. Open the pronunciation page — Open the Speakur entry for “radioactinium”.
2. Read the phonetic spelling — Read the IPA spelling () so you know which sounds to aim for.
3. Play the audio — Click Play to hear reference audio for “radioactinium”.
4. Repeat and practice — Say “radioactinium” aloud, matching stress and vowels until it feels natural.