lanthanoid
noun as in strong fondness
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Example:Erbium is a rare-earth element commonly used in fiber optic communication.
Definition:A metallic chemical element that is part of the lanthanide series (also including scandium and yttrium), valued for their rare occurrence in the Earth's crust and for the unusual optical and electronic properties of their compounds.
From rare-earth element
Example:Lanthanides are used in various industrial applications due to their unique physical and chemical properties.
Definition:The group of fifteen metallic elements with atomic numbers 57 to 71, which are part of the lanthanide series, excluding lanthanum.
From lanthanides
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