aktis

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Actinium Periodic Table of Elements Royalty Free Stock Photo

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

Silky Robber Fly - Laphria sericea Royalty Free Stock Photo

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.