| 释义 |
europium Chem.|jʊəˈrəʊpɪəm|
[mod.L. europium (E. Demarçay 1901, in Compt. Rend. Acad. Sci. CXXXII. 1485), f. Europe + -ium.]
A metallic element of the rare-earth group, symbol Eu, atomic number 63.
1901Jrnl. Chem. Soc. LXXX. ii. 511 The oxide of the new element europium..has been obtained so pure that it does not give any indication of the samarium spectra. 1938Nature 24 Sept. 579/2 Comparison of the lattice constants with those of strontium and barium fluorides shows that in this respect europium compounds approximate more closely to strontium than to barium compounds. 1967[see bastnäsite]. |