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Period 7 elements

Period 7 holds all 15 actinides plus the superheavy synthetic elements up to oganesson. Most are radioactive and many exist only in microgram quantities created in particle accelerators.

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Period: 1 2 3 4 5 6 7
Group: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Block: S P D F
Phase: Solid Liquid Gas