Actinium Ac · 89
solid metal · period 7 · f-block· actinide
Anatomy
Transliteration. The phonetic half approximates the international name. Actinium
History of the character
Every form found in the sources, from the first missionary chemistry books of the 1850s to the current standards. Hover a dot for the source. Simplified 锕, traditional 錒.
- 1933 錒 ā 化學命名原則 Principles of Chemical Nomenclature, Zhèng Zhènwén (鄭貞文), National Institute for Compilation and Translationinferred Inferred: known by 1933, when the Principles fixed one character per element, and no later change is recorded.
Homophones
No other element shares this syllable.
Elsewhere
Japanese アクチニウム Korean 악티늄 Vietnamese actini
Western name from Greek ἀκτίς (aktis), “beam”. Compare all
Unicode
U+9515 in CJK Unified Ideographs