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 relatedKey Takeaways: Introduction Understanding Nht Games Key Challenges of Playing at Nht Introduction to the T238 SPIN 40mm Tracer Grenade Gameplay Enhancements Offered