(Z = 1 → 118) Method: proportional scaling of known isotope chains so the sum = 7,759 (Neufcourt et al. 2020). Element (Z) Isotopes Known Predicted Isotopes (est.) H (1) 7 17 He (2) 9 21 Li (3) 11 26 Be (4) 12 28 B (5) 13 31 C (6) 15 36 N (7) 16 … Continue reading Predicted-only Isotope Ledger