Element (Z) Isotopes Known Stable Unstable Predicted Isotopes (est.) H (1) 7 2 5 17 He (2) 9 2 7 21 Li (3) 11 2 9 26 Be (4) 12 1 11 28 B (5) 13 2 11 31 C (6) 15 2 13 36 N (7) 16 2 14 38 O (8) 17 3 … Continue reading Master Isotope Table (Known vs Predicted, Z = 1 → 118)