Rare Earth Elements – a Novelty in Energy Security

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Rare Earth Elements Profile

Definitions and characteristics The rare earth elements (REE) (sometimes referred to as the rare earth metals) are a group of 17 chemically similar metallic elements, including the 15 lanthanides, scandium and yttrium. The lanthanides are elements spanning atomic numbers 57 (lanthanum, La) to 71 (lutetium, Lu) (Table 1). The lanthanides all occur in nature, although promethium, the rarest, only...

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ژورنال

عنوان ژورنال: Journal of Ecological Engineering

سال: 2020

ISSN: 2299-8993

DOI: 10.12911/22998993/119810