Rare earth/rare earth elements
Lanthanide elements with atomic numbers ranging from 57 to 71 in the periodic table, namely lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm)
Samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), er...
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