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atomic number 68
Noun
a trivalent metallic element of the rare earth group; occurs with yttrium
synonym
Er
erbium
holo substance
fergusonite
gadolinite
ytterbite
hypernym
metal
metallic element
atomic number 68 vs Er
atomic number 68 vs erbium
atomic number 68 vs metal
atomic number 68 vs metallic element
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