spin238Key Takeaways: Introduction Understanding Nht Games Key Challenges of Playing at Nht Introduction to the T238 SPIN 40mm Tracer Grenade Gameplay Enhancements OfferedSpin; 238 U: 4.468(6) × 10 9 a: 0+ Isotones and Isobars The following table shows the atomic nuclei that are isotonic (same neutron number N = 146) and isobaric (same nucleon number A = 238)