錒 (ā) - Actinium — a radioactive metallic chemical element with

錒Tone 1

ā ｜ 15 strokes ｜ radical:

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錒 · ā

Actinium — a radioactive metallic chemical element with symbol Ac and atomic number 89.

Actinium — a radioactive metallic chemical element with

Usage highlights

Actinium elementActiniumActinium seriesActinium compoundRadioactive actiniumActinium discovery

Synonyms

Usage & contexts

Examples

  • Actinium is a radioactive element (放射性元素).
  • The chemical symbol for actinium is Ac (化学符号 Ac).
  • Actinium-227 is used in radiotherapy (放射疗法).
  • It was discovered in uranium ore (铀矿石).

Collocations

  • Actinium element(錒元素)
  • Actinium-227(錒-227)
  • Actinium series(錒系)
  • Actinium compound(錒化合物)
  • Radioactive actinium(放射性錒)
  • Actinium discovery(錒的发现)

Idioms

  • Actinium series elements(錒系元素)
  • Actinide elements(錒系元素)

Cultural background

FAQ
  • Discovered in 1899 by French chemist André-Louis Debierne.
  • Name derived from Greek 'aktis' meaning 'ray' or 'beam', referring to its radioactivity.
  • Belongs to the actinide series in the periodic table.

FAQ