Rare Earth Elements And Lanthanide Elements. Here's a list of the 15 elements that are lanthanides, which run from atomic number 57 (lanthanum, or ln) and 71 (lutetium, or lu): Lanthanum:symbol ln, atomic number 57 2.
Metallium, Inc: Rare, Exotic Metals and Elements for Sale ... from www.elementsales.com See full list on thoughtco.com Oct 29, 1999 · charles james and the rare earths the 17 rare earth elements, or lanthanides, consist of elements 21 (scandium), 39 (yttrium), and 57 (lanthanum) to 71 (lutetium). These include the fifteen lanthanides on the periodic table plus scandium and yttrium.
Terbium:symbol tb, atomic number 65 10.
Additionally, none of the elements occurs free in nature. Because the lanthanides are all transition metals, these elements share common characteristics. Some references also exclude lutetium from the group because it has a single valence electron in the 5d shell. Samarium:symbol sm, atomic number 62 7.
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