Rare earth elements pdf
The rare earth elements (REE) are a group of seventeen metallic elements - the fifteen lanthanides, with atomic numbers 57 (lanthanum, La) to 71 (lutetium, Lu), together with yttrium (Y, atomic number 39) and scandium (Sc, atomic number 21). All have similar chemical properties. Abstract The rare-earth elements (REEs) are 15 elements that range in atomic number from 57 (lanthanum) to 71 (lutetium); they are commonly referred to as the “lanthanides.” Yttrium (atomic number 39) is also commonly regarded as an REE because it shares chemical and physical similarities and has affinities with the comienzoweb.com by: 1. Rare earth elements (REEs) are a group of 15 chemical elements in the periodic. table, specifically the lanthanides. Two other elements, scandium and yttrium, have. a similar physiochemistry to the lanthanides, are commonly found in the same. mineral assemblages, and are .