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neptunium series

noun

Definition of neptunium series 

: a radioactive series that does not now occur in nature and that begins with plutonium of mass number 241 and continues to americium, to the longest-lived member of the series neptunium of mass number 237, and eventually to the stable end product bismuth

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Dictionary Entries near neptunium series

neptunist

neptunite

neptunium

neptunium series

ne quid nimis

neral

nerd

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