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GADOLINIUM (symbol Gd., atomic weight...

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Originally appearing in Volume V11, Page 383 of the 1911 Encyclopedia Britannica.
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GADOLINIUM (
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symbol Gd., atomic
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weight 157.3)  , one of the rare
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earth metals (see
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ERBIUM) . The
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element was discovered in 188o in the
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mineral samarskite by C .
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Marignac (Comptes rendus, ,88o, 9o, p . 899;
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Ann. chim. phys., 188o [s] 20, p . 535) . G . Urbain (Comptes rendus, 1905, 140, p . 583) separates the
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metal by crystallizing the
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double nitrate of
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nickel and
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gadolinium . The salts show absorption bands in the ultra-
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violet . The
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oxide Gd203 is colourless (Lecoq de Boisbaudran) .

End of Article: GADOLINIUM (symbol Gd., atomic weight 157.3)
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NIELS WILHELM GADE (1817-189o) 		[next]
CHRISTOPHER GADSDEN (1724-1805)

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