| Atomic # |
Symbol |
Name |
Stable (non-radioactive) Isotopes |
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| 43 | Tc | Technetium | None. All natural isotopes are radioactive |
| 61 | Pm | Promethium | None. All natural isotopes are radioactive |
| 84 | Po | Polonium | None. All natural isotopes are radioactive |
| 85 | At | Astatine | None. All natural isotopes are radioactive |
| 86 | Rn | Radon | None. All natural isotopes are radioactive |
| 87 | Fr | Francium | None. All natural isotopes are radioactive |
| 88 | Ra | Radium | None. All natural isotopes are radioactive |
| 89 | Ac | Actinium | None. All natural isotopes are radioactive |
| 91 | Pa | Protactinium | None. All natural isotopes are radioactive |
| 92 | U | Uranium | None. All natural isotopes are radioactive |
| 93 | Np | Neptunium | None. All isotopes are man-made and radioactive |
| 94 | Pu | Plutonium | None. All isotopes are man-made and radioactive |
| 95 | Am | Americium | None. All isotopes are man-made and radioactive |
| 96 | Cm | Curium | None. All isotopes are man-made and radioactive |
| 97 | Bk | Berkelium | None. All isotopes are man-made and radioactive |
| 98 | Cf | Californium | None. All isotopes are man-made and radioactive |
| 99 | Es | Einsteintium | None. All isotopes are man-made and radioactive |
| 100 | Fm | Fermium | None. All isotopes are man-made and radioactive |
| 101 | Md | Mendelevium | None. All isotopes are man-made and radioactive |
| 102 | No | Nobelium | None. All isotopes are man-made and radioactive |
| 103 | Lr | Lawrencium | None. All isotopes are man-made and radioactive |
| 104 | Rf | Rutherfordium | None. All isotopes are man-made and radioactive |
| 105 | Db | Dubnium | None. All isotopes are man-made and radioactive |
| 106 | Sg | Seaborgium | None. All isotopes are man-made and radioactive |
| 107 | Bh | Bohrium | None. All isotopes are man-made and radioactive |
| 108 | Hs | Hassium | None. All isotopes are man-made and radioactive |
| 109 | Mt | Meitnerium | None. All isotopes are man-made and radioactive |
| 110 | Ds | Darmstadtium | None. All isotopes are man-made and radioactive |
| 111 | Rg | Roentgenium | None. All isotopes are man-made and radioactive |
| 112 | Cn | Copernicium | None. All isotopes are man-made and radioactive |
| 113 | Nh | Nihonium | None. All isotopes are man-made and radioactive |
| 114 | Fl | Flerovium | None. All isotopes are man-made and radioactive |
| 115 | Mc | Moscovium | None. All isotopes are man-made and radioactive |
| 116 | Lv | Livermorium | None. All isotopes are man-made and radioactive |
| 117 | Ts | Tennessine | None. All isotopes are man-made and radioactive |
| 118 | Og | Oganesson | None. All isotopes are man-made and radioactive |
| 64 | Gd | Gadolinium | 154Gd 155Gd 156Gd 157Gd 158Gd 160Gd |
| 4 | Be | Beryllium | 9Be |
| 41 | Nb | Niobium | 93Nb |
| 42 | Mo | Molybdenum | 92Mo, 94Mo, 95Mo, 96Mo, 97Mo, 98Mo |
| 40 | Zr | Zirconium | 90Zr, 91Zr, 92Zr, 94Zr |
| 39 | Y | Yttrium | 89Y |
| 37 | Rb | Rubidium | 85Rb |
| 38 | Sr | Strontium | 84Sr, 86Sr, 87Sr, 88Sr |
| 35 | Br | Bromine | 79Br, 81Br |
| 36 | Kr | Krypton | 78Kr, 80Kr, 82Kr, 83Kr, 84Kr, 86Kr |
| 33 | As | Arsenic | 75As |
| 34 | Se | Selenium | 74Se, 76Se, 77Se, 78Se, 80Se |
| 32 | Ge | Germanium | 70Ge, 72Ge, 73Ge, 74Ge |
| 3 | Li | Lithium | 6Li, 7Li |
| 31 | Ga | Gallium | 69Ga, 71Ga |
| 30 | Zn | Zinc | 64Zn, 66Zn, 67Zn, 68Zn, 70Zn |
| 29 | Cu | Copper | 63Cu, 65Cu |
| 27 | Co | Cobalt | 59Co |
| 28 | Ni | Nickel | 58Ni, 60Ni, 61Ni, 62Ni, 64Ni |
| 25 | Mn | Manganese | 55Mn |
| 26 | Fe | Iron | 54Fe, 56Fe, 57Fe, 58Fe |
| 23 | V | Vanadium | 51V |
| 24 | Cr | Chromium | 50Cr, 52Cr, 53Cr, 54Cr |
| 22 | Ti | Titanium | 46Ti, 47Ti, 48Ti, 49Ti, 50Ti |
| 21 | Sc | Scandium | 45Sc |
| 20 | Ca | Calcium | 40Ca, 42Ca, 43Ca, 44Ca, 46Ca |
| 2 | He | Helium | 3He, 4He |
| 19 | K | Potassium | 39K, 41K |
| 18 | Ar | Argon | 36Ar, 38Ar, 40Ar |
| 17 | Cl | Chlorine | 35Cl, 37Cl |
| 16 | S | Sulfur | 32S, 33S, 34S, 36S |
| 15 | P | Phosphorus | 31P |
| 14 | Si | Silicon | 28Si, 29Si, 30Si |
| 13 | Al | Aluminum | 27Al |
| 12 | Mg | Magnesium | 24Mg, 25Mg, 26Mg |
| 11 | Na | Sodium | 23Na |
| 90 | Th | Thorium | 232Th |
| 10 | Ne | Neon | 20Ne, 21Ne, 22Ne |
| 83 | Bi | Bismuth | 209Bi |
| 82 | Pb | Lead | 204Pb, 206Pb, 207Pb, 208Pb |
| 81 | Tl | Thallium | 203Tl, 205Tl |
| 1 | H | Hydrogen | 1H, 2H |
| 9 | F | Fluorine | 19F |
| 79 | Au | Gold | 197Au |
| 80 | Hg | Mercury | 196Hg, 198Hg, 199Hg, 200Hg, 201Hg, 202Hg, 204Hg |
| 78 | Pt | Platinum | 192Pt, 194Pt, 195Pt, 196Pt, 198Pt |
| 77 | Ir | Iridium | 191Ir, 193Ir |
| 75 | Re | Rhenium | 185Re |
| 76 | Os | Osmium | 184Os, 187Os, 188Os, 189Os, 190Os, 192Os |
| 73 | Ta | Tantalum | 181Ta |
| 74 | W | Tungsten | 180W, 182W, 183W, 184W, 186W |
| 72 | Hf | Hafnium | 176Hf, 177Hf, 178Hf, 179Hf, 180Hf |
| 71 | Lu | Lutertium | 175Lu |
| 8 | O | Oxygen | 16O, 17O, 18O |
| 69 | Tm | Thulium | 169Tm |
| 70 | Yb | Ytterbium | 168Yb, 170Yb, 171Yb, 172Yb, 173Yb, 174Yb, 176Yb |
| 67 | Ho | Holmium | 165Ho |
| 68 | Er | Erbium | 162Er, 164Er, 166Er, 167Er, 168Er, 170Er |
| 65 | Tb | Terbium | 159Tb |
| 66 | Dy | Dysprosium | 156Dy, 158Dy, 160Dy, 161Dy, 162Dy, 163Dy, 164Dy |
| 63 | Eu | Europium | 151Eu, 153Eu |
| 7 | N | Nitrogen | 14N, 15N |
| 62 | Sm | Samarium | 144Sm, 149Sm, 150Sm, 152Sm, 154Sm |
| 60 | Nd | Neodymium | 142Nd, 143Nd, 145Nd, 146Nd, 148Nd |
| 59 | Pr | Praseodymium | 141Pr |
| 57 | La | Lanthanum | 139La |
| 58 | Ce | Cerium | 136Ce, 138Ce, 140Ce, 142Ce |
| 55 | Cs | Cesium | 133Cs |
| 56 | Ba | Barium | 130Ba, 132Ba, 134Ba, 135Ba, 136Ba, 137Ba, 138Ba |
| 6 | C | Carbon | 12C, 13C |
| 53 | I | Iodine | 127I |
| 54 | Xe | Xenon | 124Xe, 126Xe, 128Xe, 129Xe, 130Xe, 131Xe, 132Xe, 134Xe, 136Xe |
| 51 | Sb | Antimony | 121Sb, 123Sb |
| 52 | Te | Tellurium | 120Te, 122Te, 124Te, 125Te, 126Te |
| 49 | In | Indium | 113In |
| 50 | Sn | Tin | 112Sn, 114Sn, 115Sn, 116Sn, 117Sn, 118Sn, 119Sn, 120Sn, 122Sn, 124Sn |
| 5 | B | Boron | 10B, 11B |
| 47 | Ag | Silver | 107Ag, 109Ag |
| 48 | Cd | Cadmium | 106Cd, 108Cd, 110Cd, 111Cd, 112Cd, 114Cd |
| 45 | Rh | Rhodium | 103Rh |
| 46 | Pd | Palladium | 102Pd, 104Pd, 105Pd, 106Pd, 108Pd, 110Pd |
| 44 | Ru | Ruthenium | 100Ru, 101Ru, 102Ru, 104Ru, 96Ru, 98Ru, 99Ru |
