出典:Wiktionary
出典:『Wiktionary』 (2026/01/15 19:55 UTC 版)
scandium (uncountable)
Coined in 1869 by chemist Lars Fredrik Nilson, derived from Scandia (“Scandinavia”) + -ium (chemical element suffix).
出典:Wikipedia
出典:『Wikipedia』 (2011/06/11 10:43 UTC 版)
Scandium (
/ˈskændiəm/ skan-dee-əm) is a chemical element with symbol Sc and atomic number 21. A silvery-white metallic transition metal, it has historically been sometimes classified as a rare earth element, together with yttrium and the lanthanoids. It was discovered in 1879 by spectral analysis, of the minerals euxenite and gadolinite from Scandinavia.