actinides

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Related to Actinide elements: actinide series

actinides

(actinoids) The name of the group of elements with atomic numbers from 89 (Actinium) to 103 (Lawrencium).
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References in periodicals archive ?
The open f-shells found in lanthanide and actinide elements make the electronic structure of f-element unusually complex.
Moreover, REE have been used, as analogues for actinide elements, in studies related to radioactive waste disposal in order to demonstrate their general immobility in weathering environments [15].