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.Spin; 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)