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YTTERBIUM (NEO-YTTERBIUM) [symbol, Yb...

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Originally appearing in Volume V28, Page 942 of the 1911 Encyclopedia Britannica.
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YTTERBIUM (NEO-YTTERBIUM) [See also:symbol, Yb; atomic See also:weight, 172.0 (0=16)] , a metallic chemical See also:element belonging to the rare See also:earth See also:group. Mixed with See also:scandium it was discovered by See also:Marignac in gadolinite in 1878 (see RARE EARTHS). The See also:oxide, Yb203, is See also:white and forms colourless salts; the crystallized chloride, YbC13.6H20, forms colourless, deliquescent crystals; the anhydrous chloride sublimes on See also:heating (C. Matignon, See also:Ann. chim. plays., 1906 (8), 8, p. 440). In 1907 G. Urbain separated ytterbium into two new elements, neo-ytterbium and lutecium (atomic weight, 174.0); and in 1908 C. A. von Welsbach published the same result, naming his elements aldebaranium and cassiopeium (on the question of priority see F. See also:Wenzel, Zeit. anorg. Chem., 1909, 64, p. 119).

End of Article: YTTERBIUM (NEO-YTTERBIUM) [symbol, Yb; atomic weight, 172.0 (0=16)]

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