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neptunium series
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neptunium series The four radioactive series of chemical elements: (from top) the uranium series, the neptunium series, the thorium series, and the actinium series.
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neptunium series
neptunium series The neptunium series.

neptunium series

chemical series
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radioactive series
neptunium

neptunium series, set of artificially produced and unstable heavy nuclei that are genetically related through alpha and beta decay. It is one of four radioactive series.

This article was most recently revised and updated by Erik Gregersen.