Sinonimi: Eu | atomic number 63
ETYM New Lat.; Europe + -ium, as in aluminium.
A bivalent and trivalent metallic element of the rare earth group; SYN. Eu, atomic number 63.
Soft, grayish, metallic element of the lanthanide series, symbol Eu, atomic number 63, atomic weight 151.96. It is used in lasers and as the red phosphor in color televisions; its compounds are used to make control rods for nuclear reactors. It was named in 1901 by French chemist Eugčne Demarçay (1852–1904) after the continent of Europe, where it was first found.