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Thulium (Tm).
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- Author(s): Minichiello, Mia
- Source:
Salem Press Encyclopedia of Science, 2021. 3p.
- Subject Terms:
- Additional Information
- Abstract:
Thulium is a metallic chemical element of the periodic table. It is a rare earth metal belonging to the lanthanide group of elements, which includes fourteen other rare earth elements, such as lanthanum, yttrium, and promethium. Rare earth elements typically occur together in nature and are oftentimes difficult to separate.
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