ACTINIDE
Actinide
The actinide or actinoid series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium through lawrencium.The above text is a snippet from Wikipedia: Actinide
and as such is available under the Creative Commons Attribution/Share-Alike License.
actinide
Noun
- 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.