Nuclide data: masses, binding energies and half-lives
All 253 stable nuclides (NUBASE2020) with atomic mass, binding energy per nucleon and natural abundance, plus the half-lives, decay modes and uses of the radionuclides used on this site.
| Hydrogen | 1 | 0 | 1 | 1.007825 | 0.000 | 99.99 | stable | — | — | |
| Hydrogen | 1 | 1 | 2 | 2.014102 | 1.112 | 0.0115 | stable | — | — | |
| Helium | 2 | 1 | 3 | 3.016029 | 2.573 | 1.340 × 10⁻⁴ | stable | — | — | |
| Helium | 2 | 2 | 4 | 4.002603 | 7.074 | 100 | stable | — | — | |
| Lithium | 3 | 3 | 6 | 6.015123 | 5.332 | 7.59 | stable | — | — | |
| Lithium | 3 | 4 | 7 | 7.016003 | 5.606 | 92.41 | stable | — | — | |
| Beryllium | 4 | 5 | 9 | 9.012183 | 6.463 | 100 | stable | — | — | |
| Boron | 5 | 5 | 10 | 10.012937 | 6.475 | 19.9 | stable | — | — | |
| Boron | 5 | 6 | 11 | 11.009305 | 6.928 | 80.1 | stable | — | — | |
| Carbon | 6 | 6 | 12 | 12.000000 | 7.680 | 98.93 | stable | — | — | |
| Carbon | 6 | 7 | 13 | 13.003355 | 7.470 | 1.07 | stable | — | — | |
| Nitrogen | 7 | 7 | 14 | 14.003074 | 7.476 | 99.64 | stable | — | — | |
| Nitrogen | 7 | 8 | 15 | 15.000109 | 7.699 | 0.364 | stable | — | — | |
| Oxygen | 8 | 8 | 16 | 15.994915 | 7.976 | 99.76 | stable | — | — | |
| Oxygen | 8 | 9 | 17 | 16.999132 | 7.751 | 0.038 | stable | — | — | |
| Oxygen | 8 | 10 | 18 | 17.999160 | 7.767 | 0.205 | stable | — | — | |
| Fluorine | 9 | 10 | 19 | 18.998403 | 7.779 | 100 | stable | — | — | |
| Neon | 10 | 10 | 20 | 19.992440 | 8.032 | 90.48 | stable | — | — | |
| Neon | 10 | 11 | 21 | 20.993847 | 7.972 | 0.27 | stable | — | — | |
| Neon | 10 | 12 | 22 | 21.991385 | 8.080 | 9.25 | stable | — | — | |
| Sodium | 11 | 12 | 23 | 22.989769 | 8.111 | 100 | stable | — | — | |
| Magnesium | 12 | 12 | 24 | 23.985042 | 8.261 | 78.99 | stable | — | — | |
| Magnesium | 12 | 13 | 25 | 24.985837 | 8.224 | 10 | stable | — | — | |
| Magnesium | 12 | 14 | 26 | 25.982593 | 8.334 | 11.01 | stable | — | — | |
| Aluminium | 13 | 14 | 27 | 26.981538 | 8.332 | 100 | stable | — | — | |
| Silicon | 14 | 14 | 28 | 27.976927 | 8.448 | 92.22 | stable | — | — | |
| Silicon | 14 | 15 | 29 | 28.976495 | 8.449 | 4.685 | stable | — | — | |
| Silicon | 14 | 16 | 30 | 29.973770 | 8.521 | 3.092 | stable | — | — | |
| Phosphorus | 15 | 16 | 31 | 30.973762 | 8.481 | 100 | stable | — | — | |
| Sulfur | 16 | 16 | 32 | 31.972071 | 8.493 | 94.99 | stable | — | — | |
| Sulfur | 16 | 17 | 33 | 32.971459 | 8.498 | 0.75 | stable | — | — | |
| Sulfur | 16 | 18 | 34 | 33.967867 | 8.583 | 4.25 | stable | — | — | |
| Sulfur | 16 | 20 | 36 | 35.967081 | 8.575 | 0.01 | stable | — | — | |
| Chlorine | 17 | 18 | 35 | 34.968853 | 8.520 | 75.76 | stable | — | — | |
| Chlorine | 17 | 20 | 37 | 36.965903 | 8.570 | 24.24 | stable | — | — | |
| Argon | 18 | 18 | 36 | 35.967545 | 8.520 | 0.3336 | stable | — | — | |
| Argon | 18 | 20 | 38 | 37.962732 | 8.614 | 0.0629 | stable | — | — | |
| Argon | 18 | 22 | 40 | 39.962383 | 8.595 | 99.6 | stable | — | — | |
| Potassium | 19 | 20 | 39 | 38.963706 | 8.557 | 93.26 | stable | — | — | |
| Potassium | 19 | 22 | 41 | 40.961825 | 8.576 | 6.73 | stable | — | — | |
| Calcium | 20 | 20 | 40 | 39.962591 | 8.551 | 96.94 | stable | — | — | |
| Calcium | 20 | 22 | 42 | 41.958618 | 8.617 | 0.647 | stable | — | — | |
| Calcium | 20 | 23 | 43 | 42.958766 | 8.601 | 0.135 | stable | — | — | |
| Calcium | 20 | 24 | 44 | 43.955481 | 8.658 | 2.086 | stable | — | — | |
| Calcium | 20 | 26 | 46 | 45.953688 | 8.669 | 0.004 | stable | — | — | |
| Scandium | 21 | 24 | 45 | 44.955907 | 8.619 | 100 | stable | — | — | |
| Titanium | 22 | 24 | 46 | 45.952626 | 8.656 | 8.25 | stable | — | — | |
| Titanium | 22 | 25 | 47 | 46.951757 | 8.661 | 7.44 | stable | — | — | |
| Titanium | 22 | 26 | 48 | 47.947941 | 8.723 | 73.72 | stable | — | — | |
| Titanium | 22 | 27 | 49 | 48.947864 | 8.711 | 5.41 | stable | — | — | |
| Titanium | 22 | 28 | 50 | 49.944786 | 8.756 | 5.18 | stable | — | — | |
| Vanadium | 23 | 28 | 51 | 50.943958 | 8.742 | 99.75 | stable | — | — | |
| Chromium | 24 | 26 | 50 | 49.946042 | 8.701 | 4.345 | stable | — | — | |
| Chromium | 24 | 28 | 52 | 51.940505 | 8.776 | 83.79 | stable | — | — | |
| Chromium | 24 | 29 | 53 | 52.940646 | 8.760 | 9.501 | stable | — | — | |
| Chromium | 24 | 30 | 54 | 53.938877 | 8.778 | 2.365 | stable | — | — | |
| Manganese | 25 | 30 | 55 | 54.938043 | 8.765 | 100 | stable | — | — | |
| Iron | 26 | 28 | 54 | 53.939608 | 8.736 | 5.845 | stable | — | — | |
| Iron | 26 | 30 | 56 | 55.934936 | 8.790 | 91.75 | stable | — | — | |
| Iron | 26 | 31 | 57 | 56.935392 | 8.770 | 2.119 | stable | — | — | |
| Iron | 26 | 32 | 58 | 57.933274 | 8.792 | 0.282 | stable | — | — | |
| Cobalt | 27 | 32 | 59 | 58.933194 | 8.768 | 100 | stable | — | — | |
| Nickel | 28 | 30 | 58 | 57.935342 | 8.732 | 68.08 | stable | — | — | |
| Nickel | 28 | 32 | 60 | 59.930785 | 8.781 | 26.22 | stable | — | — | |
| Nickel | 28 | 33 | 61 | 60.931055 | 8.765 | 1.14 | stable | — | — | |
| Nickel | 28 | 34 | 62 | 61.928345 | 8.795 | 3.635 | stable | — | — | |
| Nickel | 28 | 36 | 64 | 63.927966 | 8.777 | 0.9256 | stable | — | — | |
| Copper | 29 | 34 | 63 | 62.929597 | 8.752 | 69.15 | stable | — | — | |
| Copper | 29 | 36 | 65 | 64.927789 | 8.757 | 30.85 | stable | — | — | |
| Zinc | 30 | 34 | 64 | 63.929142 | 8.736 | 49.17 | stable | — | — | |
| Zinc | 30 | 36 | 66 | 65.926034 | 8.760 | 27.73 | stable | — | — | |
| Zinc | 30 | 37 | 67 | 66.927127 | 8.734 | 4.04 | stable | — | — | |
| Zinc | 30 | 38 | 68 | 67.924844 | 8.756 | 18.45 | stable | — | — | |
| Zinc | 30 | 40 | 70 | 69.925319 | 8.730 | 0.61 | stable | — | — | |
| Gallium | 31 | 38 | 69 | 68.925574 | 8.725 | 60.11 | stable | — | — | |
| Gallium | 31 | 40 | 71 | 70.924703 | 8.718 | 39.89 | stable | — | — | |
| Germanium | 32 | 38 | 70 | 69.924249 | 8.722 | 20.52 | stable | — | — | |
| Germanium | 32 | 40 | 72 | 71.922076 | 8.732 | 27.45 | stable | — | — | |
| Germanium | 32 | 41 | 73 | 72.923459 | 8.705 | 7.76 | stable | — | — | |
| Germanium | 32 | 42 | 74 | 73.921178 | 8.725 | 36.52 | stable | — | — | |
| Arsenic | 33 | 42 | 75 | 74.921595 | 8.701 | 100 | stable | — | — | |
| Selenium | 34 | 40 | 74 | 73.922476 | 8.688 | 0.86 | stable | — | — | |
| Selenium | 34 | 42 | 76 | 75.919214 | 8.711 | 9.23 | stable | — | — | |
| Selenium | 34 | 43 | 77 | 76.919914 | 8.695 | 7.6 | stable | — | — | |
| Selenium | 34 | 44 | 78 | 77.917309 | 8.718 | 23.69 | stable | — | — | |
| Selenium | 34 | 46 | 80 | 79.916522 | 8.711 | 49.8 | stable | — | — | |
| Bromine | 35 | 44 | 79 | 78.918338 | 8.688 | 50.65 | stable | — | — | |
| Bromine | 35 | 46 | 81 | 80.916288 | 8.696 | 49.35 | stable | — | — | |
| Krypton | 36 | 42 | 78 | 77.920366 | 8.661 | 0.355 | stable | — | — | |
| Krypton | 36 | 44 | 80 | 79.916378 | 8.693 | 2.286 | stable | — | — | |
| Krypton | 36 | 46 | 82 | 81.913481 | 8.711 | 11.59 | stable | — | — | |
| Krypton | 36 | 47 | 83 | 82.914127 | 8.696 | 11.5 | stable | — | — | |
| Krypton | 36 | 48 | 84 | 83.911498 | 8.717 | 56.99 | stable | — | — | |
| Krypton | 36 | 50 | 86 | 85.910611 | 8.712 | 17.28 | stable | — | — | |
| Rubidium | 37 | 48 | 85 | 84.911790 | 8.697 | 72.17 | stable | — | — | |
| Strontium | 38 | 46 | 84 | 83.913419 | 8.678 | 0.56 | stable | — | — | |
| Strontium | 38 | 48 | 86 | 85.909261 | 8.708 | 9.86 | stable | — | — | |
| Strontium | 38 | 49 | 87 | 86.908877 | 8.705 | 7 | stable | — | — | |
| Strontium | 38 | 50 | 88 | 87.905612 | 8.733 | 82.58 | stable | — | — | |
| Yttrium | 39 | 50 | 89 | 88.905838 | 8.714 | 100 | stable | — | — | |
| Zirconium | 40 | 50 | 90 | 89.904699 | 8.710 | 51.45 | stable | — | — | |
| Zirconium | 40 | 51 | 91 | 90.905640 | 8.693 | 11.22 | stable | — | — | |
| Zirconium | 40 | 52 | 92 | 91.905035 | 8.693 | 17.15 | stable | — | — | |
| Zirconium | 40 | 54 | 94 | 93.906313 | 8.667 | 17.38 | stable | — | — | |
| Niobium | 41 | 52 | 93 | 92.906373 | 8.664 | 100 | stable | — | — | |
| Molybdenum | 42 | 50 | 92 | 91.906807 | 8.658 | 14.65 | stable | — | — | |
| Molybdenum | 42 | 52 | 94 | 93.905084 | 8.662 | 9.187 | stable | — | — | |
| Molybdenum | 42 | 53 | 95 | 94.905837 | 8.649 | 15.87 | stable | — | — | |
| Molybdenum | 42 | 54 | 96 | 95.904675 | 8.654 | 16.67 | stable | — | — | |
| Molybdenum | 42 | 55 | 97 | 96.906017 | 8.635 | 9.582 | stable | — | — | |
| Molybdenum | 42 | 56 | 98 | 97.905404 | 8.635 | 24.29 | stable | — | — | |
| Ruthenium | 44 | 52 | 96 | 95.907589 | 8.609 | 5.54 | stable | — | — | |
| Ruthenium | 44 | 54 | 98 | 97.905287 | 8.620 | 1.87 | stable | — | — | |
| Ruthenium | 44 | 55 | 99 | 98.905930 | 8.609 | 12.76 | stable | — | — | |
| Ruthenium | 44 | 56 | 100 | 99.904210 | 8.619 | 12.6 | stable | — | — | |
| Ruthenium | 44 | 57 | 101 | 100.905573 | 8.601 | 17.06 | stable | — | — | |
| Ruthenium | 44 | 58 | 102 | 101.904340 | 8.607 | 31.55 | stable | — | — | |
| Ruthenium | 44 | 60 | 104 | 103.905425 | 8.587 | 18.62 | stable | — | — | |
| Rhodium | 45 | 58 | 103 | 102.905494 | 8.584 | 100 | stable | — | — | |
| Palladium | 46 | 56 | 102 | 101.905632 | 8.580 | 1.02 | stable | — | — | |
| Palladium | 46 | 58 | 104 | 103.904030 | 8.585 | 11.14 | stable | — | — | |
| Palladium | 46 | 59 | 105 | 104.905079 | 8.571 | 22.33 | stable | — | — | |
| Palladium | 46 | 60 | 106 | 105.903480 | 8.580 | 27.33 | stable | — | — | |
| Palladium | 46 | 62 | 108 | 107.903892 | 8.567 | 26.46 | stable | — | — | |
| Palladium | 46 | 64 | 110 | 109.905173 | 8.547 | 11.72 | stable | — | — | |
| Silver | 47 | 60 | 107 | 106.905092 | 8.554 | 51.84 | stable | — | — | |
| Silver | 47 | 62 | 109 | 108.904756 | 8.548 | 48.16 | stable | — | — | |
| Cadmium | 48 | 58 | 106 | 105.906460 | 8.539 | 1.245 | stable | — | — | |
| Cadmium | 48 | 60 | 108 | 107.904184 | 8.550 | 0.888 | stable | — | — | |
| Cadmium | 48 | 62 | 110 | 109.903007 | 8.551 | 12.47 | stable | — | — | |
| Cadmium | 48 | 63 | 111 | 110.904184 | 8.537 | 12.79 | stable | — | — | |
| Cadmium | 48 | 64 | 112 | 111.902764 | 8.545 | 24.11 | stable | — | — | |
| Cadmium | 48 | 66 | 114 | 113.903365 | 8.532 | 28.75 | stable | — | — | |
| Indium | 49 | 64 | 113 | 112.904060 | 8.523 | 4.281 | stable | — | — | |
| Tin | 50 | 62 | 112 | 111.904825 | 8.514 | 0.97 | stable | — | — | |
| Tin | 50 | 64 | 114 | 113.902780 | 8.523 | 0.66 | stable | — | — | |
| Tin | 50 | 65 | 115 | 114.903345 | 8.514 | 0.34 | stable | — | — | |
| Tin | 50 | 66 | 116 | 115.901743 | 8.523 | 14.54 | stable | — | — | |
| Tin | 50 | 67 | 117 | 116.902954 | 8.510 | 7.68 | stable | — | — | |
| Tin | 50 | 68 | 118 | 117.901607 | 8.517 | 24.22 | stable | — | — | |
| Tin | 50 | 69 | 119 | 118.903311 | 8.499 | 8.59 | stable | — | — | |
| Tin | 50 | 70 | 120 | 119.902203 | 8.504 | 32.58 | stable | — | — | |
| Tin | 50 | 72 | 122 | 121.903445 | 8.488 | 4.63 | stable | — | — | |
| Tin | 50 | 74 | 124 | 123.905280 | 8.467 | 5.79 | stable | — | — | |
| Antimony | 51 | 70 | 121 | 120.903811 | 8.482 | 57.21 | stable | — | — | |
| Antimony | 51 | 72 | 123 | 122.904215 | 8.472 | 42.79 | stable | — | — | |
| Tellurium | 52 | 68 | 120 | 119.904066 | 8.477 | 0.09 | stable | — | — | |
| Tellurium | 52 | 70 | 122 | 121.903045 | 8.478 | 2.55 | stable | — | — | |
| Tellurium | 52 | 71 | 123 | 122.904271 | 8.466 | 0.89 | stable | — | — | |
| Tellurium | 52 | 72 | 124 | 123.902818 | 8.473 | 4.74 | stable | — | — | |
| Tellurium | 52 | 73 | 125 | 124.904431 | 8.458 | 7.07 | stable | — | — | |
| Tellurium | 52 | 74 | 126 | 125.903312 | 8.463 | 18.84 | stable | — | — | |
| Iodine | 53 | 74 | 127 | 126.904473 | 8.445 | 100 | stable | — | — | |
| Xenon | 54 | 70 | 124 | 123.905885 | 8.438 | 0.095 | stable | — | — | |
| Xenon | 54 | 72 | 126 | 125.904297 | 8.444 | 0.089 | stable | — | — | |
| Xenon | 54 | 74 | 128 | 127.903531 | 8.443 | 1.91 | stable | — | — | |
| Xenon | 54 | 75 | 129 | 128.904781 | 8.431 | 26.4 | stable | — | — | |
| Xenon | 54 | 76 | 130 | 129.903509 | 8.438 | 4.071 | stable | — | — | |
| Xenon | 54 | 77 | 131 | 130.905084 | 8.424 | 21.23 | stable | — | — | |
| Xenon | 54 | 78 | 132 | 131.904155 | 8.428 | 26.91 | stable | — | — | |
| Xenon | 54 | 80 | 134 | 133.905393 | 8.414 | 10.44 | stable | — | — | |
| Caesium | 55 | 78 | 133 | 132.905452 | 8.410 | 100 | stable | — | — | |
| Barium | 56 | 74 | 130 | 129.906326 | 8.406 | 0.11 | stable | — | — | |
| Barium | 56 | 76 | 132 | 131.905061 | 8.409 | 0.1 | stable | — | — | |
| Barium | 56 | 78 | 134 | 133.904508 | 8.408 | 2.42 | stable | — | — | |
| Barium | 56 | 79 | 135 | 134.905688 | 8.398 | 6.59 | stable | — | — | |
| Barium | 56 | 80 | 136 | 135.904576 | 8.403 | 7.85 | stable | — | — | |
| Barium | 56 | 81 | 137 | 136.905827 | 8.392 | 11.23 | stable | — | — | |
| Barium | 56 | 82 | 138 | 137.905247 | 8.393 | 71.7 | stable | — | — | |
| Lanthanum | 57 | 82 | 139 | 138.906363 | 8.378 | 99.91 | stable | — | — | |
| Cerium | 58 | 78 | 136 | 135.907129 | 8.374 | 0.186 | stable | — | — | |
| Cerium | 58 | 80 | 138 | 137.905994 | 8.377 | 0.251 | stable | — | — | |
| Cerium | 58 | 82 | 140 | 139.905448 | 8.376 | 88.45 | stable | — | — | |
| Cerium | 58 | 84 | 142 | 141.909250 | 8.347 | 11.11 | stable | — | — | |
| Praseodymium | 59 | 82 | 141 | 140.907660 | 8.354 | 100 | stable | — | — | |
| Neodymium | 60 | 82 | 142 | 141.907729 | 8.346 | 27.15 | stable | — | — | |
| Neodymium | 60 | 83 | 143 | 142.909820 | 8.330 | 12.17 | stable | — | — | |
| Neodymium | 60 | 85 | 145 | 144.912579 | 8.309 | 8.293 | stable | — | — | |
| Neodymium | 60 | 86 | 146 | 145.913122 | 8.304 | 17.19 | stable | — | — | |
| Neodymium | 60 | 88 | 148 | 147.916899 | 8.277 | 5.756 | stable | — | — | |
| Samarium | 62 | 82 | 144 | 143.912006 | 8.304 | 3.08 | stable | — | — | |
| Samarium | 62 | 87 | 149 | 148.917191 | 8.263 | 13.82 | stable | — | — | |
| Samarium | 62 | 88 | 150 | 149.917282 | 8.262 | 7.37 | stable | — | — | |
| Samarium | 62 | 90 | 152 | 151.919739 | 8.244 | 26.74 | stable | — | — | |
| Samarium | 62 | 92 | 154 | 153.922216 | 8.227 | 22.74 | stable | — | — | |
| Europium | 63 | 90 | 153 | 152.921237 | 8.229 | 52.19 | stable | — | — | |
| Gadolinium | 64 | 90 | 154 | 153.920873 | 8.225 | 2.18 | stable | — | — | |
| Gadolinium | 64 | 91 | 155 | 154.922629 | 8.213 | 14.8 | stable | — | — | |
| Gadolinium | 64 | 92 | 156 | 155.922130 | 8.215 | 20.47 | stable | — | — | |
| Gadolinium | 64 | 93 | 157 | 156.923967 | 8.204 | 15.65 | stable | — | — | |
| Gadolinium | 64 | 94 | 158 | 157.924111 | 8.202 | 24.84 | stable | — | — | |
| Gadolinium | 64 | 96 | 160 | 159.927061 | 8.183 | 21.86 | stable | — | — | |
| Terbium | 65 | 94 | 159 | 158.925354 | 8.189 | 100 | stable | — | — | |
| Dysprosium | 66 | 90 | 156 | 155.924284 | 8.192 | 0.056 | stable | — | — | |
| Dysprosium | 66 | 92 | 158 | 157.924415 | 8.190 | 0.095 | stable | — | — | |
| Dysprosium | 66 | 94 | 160 | 159.925204 | 8.184 | 2.329 | stable | — | — | |
| Dysprosium | 66 | 95 | 161 | 160.926939 | 8.173 | 18.89 | stable | — | — | |
| Dysprosium | 66 | 96 | 162 | 161.926805 | 8.173 | 25.48 | stable | — | — | |
| Dysprosium | 66 | 97 | 163 | 162.928737 | 8.162 | 24.9 | stable | — | — | |
| Dysprosium | 66 | 98 | 164 | 163.929181 | 8.159 | 28.26 | stable | — | — | |
| Holmium | 67 | 98 | 165 | 164.930329 | 8.147 | 100 | stable | — | — | |
| Erbium | 68 | 94 | 162 | 161.928787 | 8.152 | 0.139 | stable | — | — | |
| Erbium | 68 | 96 | 164 | 163.929208 | 8.149 | 1.601 | stable | — | — | |
| Erbium | 68 | 98 | 166 | 165.930301 | 8.142 | 33.5 | stable | — | — | |
| Erbium | 68 | 99 | 167 | 166.932056 | 8.132 | 22.87 | stable | — | — | |
| Erbium | 68 | 100 | 168 | 167.932378 | 8.130 | 26.98 | stable | — | — | |
| Erbium | 68 | 102 | 170 | 169.935472 | 8.112 | 14.91 | stable | — | — | |
| Thulium | 69 | 100 | 169 | 168.934219 | 8.114 | 100 | stable | — | — | |
| Ytterbium | 70 | 98 | 168 | 167.933891 | 8.112 | 0.123 | stable | — | — | |
| Ytterbium | 70 | 100 | 170 | 169.934767 | 8.107 | 2.982 | stable | — | — | |
| Ytterbium | 70 | 101 | 171 | 170.936332 | 8.098 | 14.09 | stable | — | — | |
| Ytterbium | 70 | 102 | 172 | 171.936387 | 8.097 | 21.69 | stable | — | — | |
| Ytterbium | 70 | 103 | 173 | 172.938216 | 8.087 | 16.1 | stable | — | — | |
| Ytterbium | 70 | 104 | 174 | 173.938868 | 8.084 | 32.02 | stable | — | — | |
| Ytterbium | 70 | 106 | 176 | 175.942575 | 8.064 | 12.99 | stable | — | — | |
| Lutetium | 71 | 104 | 175 | 174.940777 | 8.069 | 97.4 | stable | — | — | |
| Hafnium | 72 | 104 | 176 | 175.941410 | 8.061 | 5.26 | stable | — | — | |
| Hafnium | 72 | 105 | 177 | 176.943230 | 8.052 | 18.6 | stable | — | — | |
| Hafnium | 72 | 106 | 178 | 177.943708 | 8.049 | 27.28 | stable | — | — | |
| Hafnium | 72 | 107 | 179 | 178.945826 | 8.039 | 13.62 | stable | — | — | |
| Hafnium | 72 | 108 | 180 | 179.946560 | 8.035 | 35.08 | stable | — | — | |
| Tantalum | 73 | 108 | 181 | 180.947999 | 8.023 | 99.99 | stable | — | — | |
| Tungsten | 74 | 108 | 182 | 181.948206 | 8.018 | 26.5 | stable | — | — | |
| Tungsten | 74 | 109 | 183 | 182.950224 | 8.008 | 14.31 | stable | — | — | |
| Tungsten | 74 | 110 | 184 | 183.950933 | 8.005 | 30.64 | stable | — | — | |
| Tungsten | 74 | 112 | 186 | 185.954365 | 7.989 | 28.43 | stable | — | — | |
| Rhenium | 75 | 110 | 185 | 184.952958 | 7.991 | 37.4 | stable | — | — | |
| Osmium | 76 | 111 | 187 | 186.955750 | 7.974 | 1.96 | stable | — | — | |
| Osmium | 76 | 112 | 188 | 187.955837 | 7.974 | 13.24 | stable | — | — | |
| Osmium | 76 | 113 | 189 | 188.958146 | 7.963 | 16.15 | stable | — | — | |
| Osmium | 76 | 114 | 190 | 189.958445 | 7.962 | 26.26 | stable | — | — | |
| Osmium | 76 | 116 | 192 | 191.961479 | 7.949 | 40.78 | stable | — | — | |
| Iridium | 77 | 114 | 191 | 190.960591 | 7.948 | 37.3 | stable | — | — | |
| Iridium | 77 | 116 | 193 | 192.962924 | 7.938 | 62.7 | stable | — | — | |
| Platinum | 78 | 114 | 192 | 191.961043 | 7.942 | 0.782 | stable | — | — | |
| Platinum | 78 | 116 | 194 | 193.962683 | 7.936 | 32.86 | stable | — | — | |
| Platinum | 78 | 117 | 195 | 194.964794 | 7.927 | 33.77 | stable | — | — | |
| Platinum | 78 | 118 | 196 | 195.964955 | 7.927 | 25.21 | stable | — | — | |
| Platinum | 78 | 120 | 198 | 197.967897 | 7.914 | 7.356 | stable | — | — | |
| Gold | 79 | 118 | 197 | 196.966570 | 7.916 | 100 | stable | — | — | |
| Mercury | 80 | 116 | 196 | 195.965833 | 7.914 | 0.15 | stable | — | — | |
| Mercury | 80 | 118 | 198 | 197.966769 | 7.912 | 10.04 | stable | — | — | |
| Mercury | 80 | 119 | 199 | 198.968281 | 7.905 | 16.94 | stable | — | — | |
| Mercury | 80 | 120 | 200 | 199.968327 | 7.906 | 23.14 | stable | — | — | |
| Mercury | 80 | 121 | 201 | 200.970303 | 7.898 | 13.17 | stable | — | — | |
| Mercury | 80 | 122 | 202 | 201.970644 | 7.897 | 29.74 | stable | — | — | |
| Mercury | 80 | 124 | 204 | 203.973494 | 7.886 | 6.82 | stable | — | — | |
| Thallium | 81 | 122 | 203 | 202.972344 | 7.886 | 29.52 | stable | — | — | |
| Thallium | 81 | 124 | 205 | 204.974427 | 7.878 | 70.48 | stable | — | — | |
| Lead | 82 | 122 | 204 | 203.973044 | 7.880 | 1.4 | stable | — | — | |
| Lead | 82 | 124 | 206 | 205.974465 | 7.875 | 24.1 | stable | — | — | |
| Lead | 82 | 125 | 207 | 206.975897 | 7.870 | 22.1 | stable | — | — | |
| Lead | 82 | 126 | 208 | 207.976652 | 7.867 | 52.4 | stable | — | — | |
| Hydrogen | 1 | 2 | 3 | 3.016049 | 2.827 | — | 12.32 years | β⁻ | Tritium: self-luminous exit signs, fusion fuel | |
| Beryllium | 4 | 3 | 7 | 7.016929 | 5.372 | — | 53.22 days | EC | Made continuously by cosmic rays in the air | |
| Carbon | 6 | 5 | 11 | 11.011433 | 6.676 | — | 20.34 min | β⁺ | PET tracer | |
| Carbon | 6 | 8 | 14 | 14.003242 | 7.520 | — | 5700 years | β⁻ | Radiocarbon dating | |
| Nitrogen | 7 | 6 | 13 | 13.005739 | 7.239 | — | 9.965 min | β⁺ | PET heart-perfusion imaging | |
| Oxygen | 8 | 7 | 15 | 15.003066 | 7.464 | — | 2.038 min | β⁺ | PET brain blood-flow imaging | |
| Fluorine | 9 | 9 | 18 | 18.000937 | 7.632 | — | 109.7 min | β⁺ | Fluorodeoxyglucose (FDG), the workhorse PET tracer | |
| Sodium | 11 | 11 | 22 | 21.994438 | 7.916 | — | 2.602 years | β⁺ 90.57 %, EC 9.43 % | Laboratory positron source | |
| Phosphorus | 15 | 17 | 32 | 31.973908 | 8.464 | — | 14.27 days | β⁻ | Labelling DNA in molecular biology | |
| Potassium | 19 | 21 | 40 | 39.963998 | 8.538 | 0.0117 | 1.248 billion years | β⁻ 89.28 %, EC 10.72 % | Potassium–argon dating; the main natural radioactivity inside your body | |
| Cobalt | 27 | 33 | 60 | 59.933816 | 8.747 | — | 5.271 years | β⁻ | γ-ray radiotherapy and sterilisation | |
| Rubidium | 37 | 50 | 87 | 86.909181 | 8.711 | 27.83 | 49.7 billion years | β⁻ | Rubidium–strontium isochron dating | |
| Strontium | 38 | 52 | 90 | 89.907728 | 8.696 | — | 28.91 years | β⁻ | Fission product that lodges in bone like calcium | |
| Yttrium | 39 | 51 | 90 | 89.907142 | 8.693 | — | 64.05 h | β⁻ | Radioembolisation of liver tumours | |
| Molybdenum | 42 | 57 | 99 | 98.907707 | 8.608 | — | 65.93 h | β⁻ | Parent in the technetium-99m generator | |
| Technetium | 43 | 56 | 99 | — | — | — | 6.007 h | IT (γ) | The most used medical isotope: emits 140 keV γ rays | |
| Technetium | 43 | 56 | 99 | 98.906250 | 8.614 | — | 211.1 thousand years | β⁻ | Long-lived fission product | |
| Iodine | 53 | 78 | 131 | 130.906126 | 8.422 | — | 8.025 days | β⁻ | Thyroid therapy; a key early fallout nuclide | |
| Caesium | 55 | 82 | 137 | 136.907089 | 8.389 | — | 30.04 years | β⁻ | Long-lived fission product; parent of the ¹³⁷ᵐBa generator | |
| Barium | 56 | 81 | 137 | — | — | — | 2.552 min | IT (γ) | Classroom half-life experiment: emits 662 keV γ rays | |
| Krypton | 36 | 56 | 92 | 91.926173 | 8.513 | — | 1.84 s | β⁻ | Fission fragment of uranium-235 | |
| Strontium | 38 | 56 | 94 | 93.915356 | 8.594 | — | 75.3 s | β⁻ | Fission fragment of uranium-235 | |
| Xenon | 54 | 86 | 140 | 139.921646 | 8.291 | — | 13.6 s | β⁻ | Fission fragment of uranium-235 | |
| Barium | 56 | 85 | 141 | 140.914404 | 8.326 | — | 18.27 min | β⁻ | Fission fragment of uranium-235 | |
| Lead | 82 | 128 | 210 | 209.984188 | 7.836 | — | 22.2 years | β⁻ | Dating lake sediments and ice over a century | |
| Bismuth | 83 | 127 | 210 | 209.984120 | 7.833 | — | 5.012 days | β⁻ | — | |
| Polonium | 84 | 126 | 210 | 209.982874 | 7.834 | — | 138.4 days | α | The Curies’ first new element; an intense α source | |
| Lead | 82 | 132 | 214 | 213.999804 | 7.772 | — | 27.06 min | β⁻ | — | |
| Bismuth | 83 | 131 | 214 | 213.998711 | 7.773 | — | 19.9 min | β⁻ 99.979 %, α 0.021 % | — | |
| Polonium | 84 | 130 | 214 | 213.995201 | 7.785 | — | 163.5 µs | α | — | |
| Polonium | 84 | 134 | 218 | 218.008971 | 7.732 | — | 3.097 min | α 99.98 %, β⁻ 0.02 % | — | |
| Radon | 86 | 136 | 222 | 222.017576 | 7.694 | — | 3.821 days | α | Indoor radon, the largest natural source of dose | |
| Radium | 88 | 138 | 226 | 226.025408 | 7.662 | — | 1600 years | α | The Curies’ radium; the curie was first defined as the activity of 1 g of it | |
| Thorium | 90 | 140 | 230 | 230.033132 | 7.631 | — | 75.4 thousand years | α | Uranium-series dating of corals and cave deposits | |
| Thorium | 90 | 142 | 232 | 232.038054 | 7.615 | 99.98 | 14 billion years | α | Head of the thorium series; one of the Earth’s internal heat sources | |
| Thorium | 90 | 144 | 234 | 234.043600 | 7.597 | — | 24.11 days | β⁻ | — | |
| Protactinium | 91 | 143 | 234 | — | — | — | 69.54 s | β⁻ 99.84 %, IT (γ) 0.16 % | — | |
| Uranium | 92 | 142 | 234 | 234.040950 | 7.601 | 0.0054 | 245.5 thousand years | α | — | |
| Uranium | 92 | 143 | 235 | 235.043928 | 7.591 | 0.7204 | 704 million years | α | The only naturally occurring fissile nuclide | |
| Uranium | 92 | 146 | 238 | 238.050787 | 7.570 | 99.27 | 4.463 billion years | α | Head of the uranium series; uranium–lead dating | |
| Uranium | 92 | 147 | 239 | 239.054292 | 7.559 | — | 23.45 min | β⁻ | Made when uranium-238 captures a neutron: the first step to plutonium | |
| Neptunium | 93 | 146 | 239 | 239.052938 | 7.561 | — | 56.54 h | β⁻ | — | |
| Plutonium | 94 | 145 | 239 | 239.052162 | 7.560 | — | 24.11 thousand years | α | Fissile fuel bred from uranium-238 | |
| Americium | 95 | 146 | 241 | 241.056827 | 7.543 | — | 432.6 years | α | The α source in smoke detectors |
“Stable” means never observed to decay in NUBASE2020 (including observationally stable nuclides with only a lower limit on the half-life, such as ²⁰⁸Pb). Masses and binding energies are computed from AME2020 mass excesses; isomer masses are not listed. Abundances are atom fractions of representative terrestrial samples; natural samples vary.