I measc na n-eilimintí tearc-chré tá lanthanum (La), cerium (Ce), praseodimiam (Pr), neodimiam (Nd), promethium (Pm), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), eirbiam (Er), thulium (Tm), ytterbium (Yb), lutetium (Lu), scandium (Sc), agus yttrium (Y). An Eng...
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