Sjeldne jordartselementer inkluderer lantan (La), cerium (Ce), praseodym (Pr), neodym (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) og yttrium (Y). Eng...
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