Zeldzame aardelementen omvatten lanthaan (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb),lutetium (Lu), scandium (Sc) en yttrium (Y). De Engels...
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