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spin238Read writing from Spin238 On on Medium. Daftar Login Spin238 On Disini. Every day, Spin238 On and thousands of other voices read, write, and share important stories on Medium.Properties of the nuclide isotope Neptunium-238. Parent Nuclides. Direct parent isotope is: 242 Am. Nuclear Isomers. Nuclear isomers or excited states with the activation energy in keV related