| 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 | 14 | 40 |
| F (9) | 18 | 1 | 17 | 43 |
| Ne (10) | 19 | 3 | 16 | 45 |
| Na (11) | 20 | 1 | 19 | 47 |
| Mg (12) | 22 | 3 | 19 | 52 |
| Al (13) | 22 | 1 | 21 | 52 |
| Si (14) | 23 | 3 | 20 | 55 |
| P (15) | 23 | 1 | 22 | 55 |
| S (16) | 24 | 4 | 20 | 57 |
| Cl (17) | 24 | 2 | 22 | 57 |
| Ar (18) | 24 | 3 | 21 | 57 |
| K (19) | 24 | 2 | 22 | 57 |
| Ca (20) | 24 | 6 | 18 | 57 |
| Sc (21) | 25 | 1 | 24 | 59 |
| Ti (22) | 26 | 5 | 21 | 62 |
| V (23) | 26 | 1 | 25 | 62 |
| Cr (24) | 26 | 4 | 22 | 62 |
| Mn (25) | 26 | 1 | 25 | 62 |
| Fe (26) | 28 | 4 | 24 | 66 |
| Co (27) | 29 | 1 | 28 | 69 |
| Ni (28) | 31 | 5 | 26 | 74 |
| Cu (29) | 29 | 2 | 27 | 69 |
| Zn (30) | 30 | 5 | 25 | 71 |
| Ga (31) | 31 | 2 | 29 | 74 |
| Ge (32) | 32 | 5 | 27 | 76 |
| As (33) | 33 | 1 | 32 | 78 |
| Se (34) | 30 | 6 | 24 | 71 |
| Br (35) | 31 | 2 | 29 | 74 |
| Kr (36) | 32 | 6 | 26 | 76 |
| Rb (37) | 32 | 1 | 31 | 76 |
| Sr (38) | 34 | 4 | 30 | 81 |
| Y (39) | 32 | 1 | 31 | 76 |
| Zr (40) | 34 | 5 | 29 | 81 |
| Nb (41) | 34 | 1 | 33 | 81 |
| Mo (42) | 35 | 7 | 28 | 83 |
| Tc (43) | 36 | 0 | 36 | 85 |
| Ru (44) | 37 | 7 | 30 | 88 |
| Rh (45) | 35 | 1 | 34 | 83 |
| Pd (46) | 36 | 6 | 30 | 85 |
| Ag (47) | 38 | 2 | 36 | 90 |
| Cd (48) | 39 | 8 | 31 | 90 |
| In (49) | 39 | 2 | 37 | 93 |
| Sn (50) | 40 | 10 | 30 | 95 |
| Sb (51) | 36 | 2 | 34 | 85 |
| Te (52) | 38 | 8 | 30 | 90 |
| I (53) | 37 | 1 | 36 | 88 |
| Xe (54) | 40 | 9 | 31 | 95 |
| Cs (55) | 39 | 1 | 38 | 93 |
| Ba (56) | 40 | 7 | 33 | 95 |
| La (57) | 39 | 1 | 38 | 93 |
| Ce (58) | 40 | 4 | 36 | 95 |
| Pr (59) | 39 | 1 | 38 | 93 |
| Nd (60) | 41 | 5 | 36 | 97 |
| Pm (61) | 39 | 0 | 39 | 93 |
| Sm (62) | 41 | 7 | 34 | 97 |
| Eu (63) | 40 | 2 | 38 | 95 |
| Gd (64) | 41 | 7 | 34 | 97 |
| Tb (65) | 39 | 1 | 38 | 93 |
| Dy (66) | 40 | 7 | 33 | 95 |
| Ho (67) | 39 | 1 | 38 | 93 |
| Er (68) | 40 | 6 | 34 | 95 |
| Tm (69) | 39 | 1 | 38 | 93 |
| Yb (70) | 41 | 7 | 34 | 97 |
| Lu (71) | 40 | 1 | 39 | 95 |
| Hf (72) | 36 | 5 | 31 | 85 |
| Ta (73) | 37 | 1 | 36 | 88 |
| W (74) | 35 | 5 | 30 | 83 |
| Re (75) | 39 | 1 | 38 | 93 |
| Os (76) | 35 | 7 | 28 | 83 |
| Ir (77) | 34 | 2 | 32 | 81 |
| Pt (78) | 35 | 6 | 29 | 83 |
| Au (79) | 36 | 1 | 35 | 85 |
| Hg (80) | 38 | 7 | 31 | 90 |
| Tl (81) | 39 | 2 | 37 | 93 |
| Pb (82) | 43 | 4 | 39 | 102 |
| Bi (83) | 41 | 0 | 41 | 97 |
| Po (84) | 42 | 0 | 42 | 100 |
| At (85) | 39 | 0 | 39 | 93 |
| Rn (86) | 39 | 0 | 39 | 93 |
| Fr (87) | 34 | 0 | 34 | 81 |
| Ra (88) | 34 | 0 | 34 | 81 |
| Ac (89) | 33 | 0 | 33 | 78 |
| Th (90) | 31 | 1 | 30 | 74 |
| Pa (91) | 29 | 0 | 29 | 69 |
| U (92) | 28 | 0 | 28 | 66 |
| Np (93) | 20 | 0 | 20 | 47 |
| Pu (94) | 20 | 0 | 20 | 47 |
| Am (95) | 17 | 0 | 17 | 40 |
| Cm (96) | 19 | 0 | 19 | 45 |
| Bk (97) | 21 | 0 | 21 | 50 |
| Cf (98) | 20 | 0 | 20 | 47 |
| Es (99) | 18 | 0 | 18 | 43 |
| Fm (100) | 19 | 0 | 19 | 45 |
| Md (101) | 16 | 0 | 16 | 38 |
| No (102) | 13 | 0 | 13 | 31 |
| Lr (103) | 16 | 0 | 16 | 38 |
| Rf (104) | 18 | 0 | 18 | 43 |
| Db (105) | 16 | 0 | 16 | 38 |
| Sg (106) | 14 | 0 | 14 | 33 |
| Bh (107) | 15 | 0 | 15 | 36 |
| Hs (108) | 15 | 0 | 15 | 36 |
| Mt (109) | 13 | 0 | 13 | 31 |
| Ds (110) | 15 | 0 | 15 | 36 |
| Rg (111) | 11 | 0 | 11 | 26 |
| Cn (112) | 9 | 0 | 9 | 21 |
| Nh (113) | 9 | 0 | 9 | 21 |
| Fl (114) | 6 | 0 | 6 | 14 |
| Mc (115) | 4 | 0 | 4 | 9 |
| Lv (116) | 4 | 0 | 4 | 9 |
| Ts (117) | 2 | 0 | 2 | 5 |
| Og (118) | 1 | 0 | 1 | 2 |
Totals
- Total elements: 118
- Known isotopes: 3269
- Stable isotopes (strict): 273
- Unstable isotopes: 2996
- Predicted isotopes: 7759
📊 Isotope Counts by Element (Z = 1 → 118) – SolveForce Communications
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