“What are the lanthanide metals?”

Continuing on with our tour of the periodic table, we have come across a series of metals with atomic numbers 58 through 71 called the lanthanides. The lanthanides are bright, silvery, and are so soft that they could be cut with a knife. Lanthanides react with hot water to produce hydrogen gas. Lanthanides used to be called the rare metals, not because they were rare, but because it is very difficult to find the in their pure form. The elements that make up the Lanthanides include lanthanum (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), and lutetium (Lu).

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