Friday, 13 January 2023

Rare earth elements

 a set of 17 chemical elements in the periodic table — the 15 lanthanides, plus scandium and yttrium.

  • The 17 rare earths are cerium (Ce), dysprosium (Dy), erbium (Er), europium (Eu), gadolinium (Gd), holmium (Ho), lanthanum (La), lutetium (Lu), neodymium (Nd), praseodymium (Pr), promethium (Pm), samarium (Sm), scandium (Sc), terbium (Tb), thulium (Tm), ytterbium (Yb), and yttrium (Y).
  • One of the rare earths, promethium, is radioactive.
Kiruna mine in Sweden, where the deposits have been found.

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