atomic number 21

Questions

What does atomic number 21 mean?

a white trivalent metallic element; sometimes classified in the rare earth group; occurs in the Scandinavian mineral thortveitite

How to pronounce atomic number 21

1. Open the pronunciation page — Open the Speakur entry for “atomic number 21”.
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 “atomic number 21”.
4. Repeat and practice — Say “atomic number 21” aloud, matching stress and vowels until it feels natural.