ACTINIDE

Actinide

The actinide or actinoid series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium through lawrencium.

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actinide

Noun

  1. Any of the 14 radioactive elements of the periodic table that are positioned under the lanthanides to which they have similar chemistry.


The above text is a snippet from Wiktionary: actinide
and as such is available under the Creative Commons Attribution/Share-Alike License.

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