A soft, bright, silvery rare-earth element occurring in three allotropic forms and used as an x-ray source for portable irradiation devices, as a dopant for laser materials, and in solar cells and some special alloys. Atomic number 70; atomic weight 173.05; melting point 824°C; boiling point 1,196°C; specific gravity 6.903 (alpha form), 6.966 (beta form); valence 2, 3.
A scarce, divalent or trivalent, silvery, malleable chemical element, one of the rare-earth elements, found with yttrium in gadolinite and certain other minerals: symbol, Yb; at. no. 70
A soft, silvery-white metallic element of the lanthanide series that occurs as seven stable isotopes. It is used as a radiation source for portable x-ray machines. Atomic number 70; atomic weight 173.04; melting point 824°C; boiling point 1,196°C; specific gravity 6.972 or 6.54 (25°C) depending on allotropic form; valence 2, 3.
A rare divalent or trivalent, silvery, soft, malleable, and ductile metallic rare-earth element.Ytterbium has little practical application. Number 70 in the Periodic Table of Elements, ytterbium is named for the village of Ytterby, Sweden, where it was discovered. So were erbium, yttrium, and terbium. See also erbium and television.
A metallic chemical element (symbol Yb) with an atomic number of 70.
Origin of ytterbium
- After Ytterby , a town in Sweden
From American Heritage Dictionary of the English Language, 5th Edition
- Named for the Swedish town of Ytterby.