The actinide family of elements (actinoid series) are the 15 metallic elements with atomic numbers from 89 to 103. The actinoid series derives its name from the first element in the series, actinium. The chemical symbol is A.
The actinide family of elements (actinoid series) are the 15 metallic elements with atomic numbers from 89 to 103. The actinoid series derives its name from the first element in the series, actinium. The chemical symbol is A.