Discovery of Erbium
Erbium, atomic number 68, has a mass of 167.259 au.
Erbium was first observed or predicted in 1842 by G. Mosander and first isolated in 1879 by T. Cleve. It took about 80 years to split the rare earths metal ores, the ceria & yttria, into the pure metals. See the timeline here.
|Periodic Table, What is it showing?||
© Mark R. Leach 1999-
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