lutetium definition

  • noun:
    • A silvery-white rare-earth element this is certainly remarkably tough to split from various other rare-earth elements, used in atomic technology. Atomic quantity 71; atomic body weight 174.97; melting point 1,663°C; boiling point 3,395°C; specific gravity 9.840 (at 25°C); valence 3. See Table at element.
    • A metallic substance element (expression Lu) with an atomic wide range of 71.
    • A metallic element separated from ytterbium in 1907, by Urbain in Paris and also by von Welsbach in Vienna. It really is a member of the Lanthanide rare earth group. Image, Lu; atomic quantity 71; atomic body weight 174.967 [C=12.011]. Formerly spelled Lutecium.
    • a trivalent metallic element of the rare-earth team; usually takes place in colaboration with yttrium

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