| 单词 |
florentium |
| 释义 |
florentium Chem.|fləˈrɛnʃɪəm|
[a. It. florentium (also florenzio) (Rolla & Fernandes 1924: see Gazz. chim. ital. (1926) LVI. 862–4 and Atti Accad. Lincei: Rend. (Sci. fisiche, etc.) (1926) IV. 498–500), f. Florentia, ancient name of Florence, Italy + -ium.]
A disused name for the element promethium.
1927Chem. Abstr. XXI. 1209 The exact text of the original sealed note..shows that it contains..the proposal to name the new element florentium (florenzio), with the symbol Fr. 1939Nature 9 Dec. 959/1 The existing data about No. 61, which is called illinium or florentium, are derived from X-ray spectral lines in the L- and K- series. 1962Cotton & Wilkinson Adv. Inorg. Chem. xxxi. 871 As early as 1926, several groups of workers reported optical and X-ray evidence for the existence of element 61 in various lanthanide concentrates, and the names Illinium, Il, and Florentium, Fl, were proposed by workers at the Universities of Illinois and Florence. |
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