scandiumn.

Brit.

/ˈskandɪəm/, U.S.

/ˈskændiəm/

Etymology: < Scandia: see Scandian adj. and -ium suffix; scandium first formed in Swedish (L. F. Nilson 1879, in Öfversigt af K. Vetenskaps-Akad. Förh. XXXVI. iii. 47).

Chemistry.

A silvery white metallic element, the ‘eka-boron’ of Mendeleev, which is found in small quantities in association with rare-earth metals (among which it is often classified) and in some tin and tungsten ores, and forms colourless salts in which it is trivalent. Symbol Sc; atomic number 21.

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the world > matter > chemistry > elements and compounds > metals > specific elements > scandium > [noun]

scandium1879

1879 Academy 13 Sept. 198 P. T. Cleve has isolated the metal scandium.

1880 Jrnl. Chem. Soc. 38 7 Scandium forms but one oxide, scandia, Sc₂O₃.

1887 Athenæum 3 Sept. 299/3 Three recognized gaps have been filled by the discovery of the elements gallium, scandium, and germanium.

1905 Athenæum 22 July 118/2 Sir Norman Lockyer has also observed in the chromosphere of the sun the spectrum of the rare element scandium, the predicted discovery of which was one of the crowning triumphs of Mendeléeff's Periodic Law.

1922 Nature 17 June 799/1 The extraction and purification of scandium from thorveitite of Madagascar. This mineral, which contains 42 per cent of scandium oxide, is fused with soda and the silica removed by washing.

1955 Sci. News Let. 11 June 374/3 Studies made by Britain's Hydraulics Research Station and the Atomic Energy Research Establishment have shown that very finely ground glass containing radioactive scandium oxide moves with the mud when mixed with it in the River Thames.

1974 Encycl. Brit. Micropædia VIII. 944/3 Scandium is now produced on a small scale mostly as a by-product of uranium extraction from the mineral davidite (about 0·02 percent scandium oxide). Very few uses..have been developed.

Derivatives

ˈscandia n. the white oxide, Sc₂O₃.

ΘΚΠ

the world > matter > chemistry > elements and compounds > metals > specific elements > scandium > [noun] > compounds

scandia1974

1974 Encycl. Brit. Micropædia VIII. 944/3 Nilson discovered..its oxide, scandia, in the rare-earth minerals gadolinite and euxenite.

This entry has not yet been fully updated (first published 1910; most recently modified version published online March 2022).

单词	scandium
释义	scandiumn. Brit. /ˈskandɪəm/, U.S. /ˈskændiəm/ Etymology: < Scandia: see Scandian adj. and -ium suffix; scandium first formed in Swedish (L. F. Nilson 1879, in Öfversigt af K. Vetenskaps-Akad. Förh. XXXVI. iii. 47). Chemistry. A silvery white metallic element, the ‘eka-boron’ of Mendeleev, which is found in small quantities in association with rare-earth metals (among which it is often classified) and in some tin and tungsten ores, and forms colourless salts in which it is trivalent. Symbol Sc; atomic number 21. ΘΚΠ the world > matter > chemistry > elements and compounds > metals > specific elements > scandium > [noun] scandium1879 1879 Academy 13 Sept. 198 P. T. Cleve has isolated the metal scandium. 1880 Jrnl. Chem. Soc. 38 7 Scandium forms but one oxide, scandia, Sc₂O₃. 1887 Athenæum 3 Sept. 299/3 Three recognized gaps have been filled by the discovery of the elements gallium, scandium, and germanium. 1905 Athenæum 22 July 118/2 Sir Norman Lockyer has also observed in the chromosphere of the sun the spectrum of the rare element scandium, the predicted discovery of which was one of the crowning triumphs of Mendeléeff's Periodic Law. 1922 Nature 17 June 799/1 The extraction and purification of scandium from thorveitite of Madagascar. This mineral, which contains 42 per cent of scandium oxide, is fused with soda and the silica removed by washing. 1955 Sci. News Let. 11 June 374/3 Studies made by Britain's Hydraulics Research Station and the Atomic Energy Research Establishment have shown that very finely ground glass containing radioactive scandium oxide moves with the mud when mixed with it in the River Thames. 1974 Encycl. Brit. Micropædia VIII. 944/3 Scandium is now produced on a small scale mostly as a by-product of uranium extraction from the mineral davidite (about 0·02 percent scandium oxide). Very few uses..have been developed. Derivatives ˈscandia n. the white oxide, Sc₂O₃. ΘΚΠ the world > matter > chemistry > elements and compounds > metals > specific elements > scandium > [noun] > compounds scandia1974 1974 Encycl. Brit. Micropædia VIII. 944/3 Nilson discovered..its oxide, scandia, in the rare-earth minerals gadolinite and euxenite. This entry has not yet been fully updated (first published 1910; most recently modified version published online March 2022). < n.1879
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