spin238Properties 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 relatedDengan RTP tertinggi SPIN238, Scatter merah auto JP menawarkan peluang besar untuk meraih jackpot besar di setiap permainan SPIN 238.