ALL meanings of neptunium series
nep·tu·ni·um se·ries
N n - noun neptunium series a radioactive series that starts with plutonium-241 and ends with bismuth-209. Neptunium-237 is the longest-lived member of the series. The series does not occur in nature 0
- noun neptunium series the radioactive series of nuclides starting with neptunium-237, with a half-life of 2.2 x 106 years, and ending with stable bismuth-209: many radionuclides, as plutonium-241 and uranium-237, eventually decay into neptunium-237 and are often considered members of the neptunium series 0