Discovery of Yttrium
Yttrium, atomic number 39, has a mass of 88.906 au.
Yttrium was first observed or predicted in 1794 by J. Gadolin and first isolated in 1842 by G. Mosander. 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?||
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