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The rare earth elements are a group of nearly indistinguishable and lustrous silvery-white soft heavy metals. They react slowly with cold water to form hydroxides and ignite at high temperatures. These elements are used in the production of highly efficient magnets, glasses, alloys and electronics. They are also used in the manufacture of fuel cells, mobile phones, computers, optical fiber cables, hybrid cells, and LEDs. In the agricultural se...

The rare-earth elements (REEs) or lanthanides refer to a group of 17 nearly identical lustrous silvery-white soft heavy metals. These comprise the 15 lanthanides listed on the periodic table as well as yttrium and scandium. REEs are lustrous but they tarnish in air. The rare earth metals have high electrical conductivity. There are extremely minute differences in the solubility and complex formation between these elements. Lanthanum, cerium, n...