Erbium
Of metal, gadolinite and fergusonite. May also be referred to as Er and atomic number 68.
A trivalent metallic element of the rare earth group; occurs with yttrium.
This concept's ID is @1~73920
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Of metal, gadolinite and fergusonite. May also be referred to as Er and atomic number 68.
A trivalent metallic element of the rare earth group; occurs with yttrium.
This concept's ID is @1~73920