Actinium on periodic table of the elements, with element symbol Ac

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Actinium, on the periodic table. Radioactive metal, with element symbol Ac and atomic number 89. Name giver of actinide series, named after Greek aktis, for beam or ray. No significant industrial use.

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Photo credit: © PeterHermesFurian / Alamy / Afripics
License: Royalty Free
Model Released: No

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