isotlist2_compact - aibolem/00 GitHub Wiki
Hydrogen-1 Hydrogen-2 (deuterium) Helium-3 Helium-4 no mass number 5 Lithium-6 Lithium-7 no mass number 8 Beryllium-9 Boron-10 Boron-11 Carbon-12 Carbon-13 Nitrogen-14 Nitrogen-15 Oxygen-16 Oxygen-17 Oxygen-18 Fluorine-19 Neon-20 Neon-21 Neon-22 Sodium-23 Magnesium-24 Magnesium-25 Magnesium-26 Aluminium-27 Silicon-28 Silicon-29 Silicon-30 Phosphorus-31 Sulfur-32 Sulfur-33 Sulfur-34 Sulfur-36 Chlorine-35 Chlorine-37 Argon-36 (2E) Argon-38 Argon-40 Potassium-39 Potassium-40 (B, E) – long-lived primordial radionuclide Potassium-41 Calcium-40 (2E)* Calcium-42 Calcium-43 Calcium-44 Calcium-46 (2B)* Calcium-48 (2B) – long-lived primordial radionuclide (B also predicted possible) Scandium-45 Titanium-46 Titanium-47 Titanium-48 Titanium-49 Titanium-50 Vanadium-50 (B, E) – long-lived primordial radionuclide Vanadium-51 Chromium-50 (2E)* Chromium-52 Chromium-53 Chromium-54 Manganese-55 Iron-54 (2E)* Iron-56 Iron-57 Iron-58 Cobalt-59 Nickel-58 (2E)* Nickel-60 Nickel-61 Nickel-62 Nickel-64 Copper-63 Copper-65 Zinc-64 (2E)* Zinc-66 Zinc-67 Zinc-68 Zinc-70 (2B)* Gallium-69 Gallium-71 Germanium-70 Germanium-72 Germanium-73 Germanium-74 Germanium-76 (2B) – long-lived primordial radionuclide Arsenic-75 Selenium-74 (2E) Selenium-76 Selenium-77 Selenium-78 Selenium-80 (2B) Selenium-82 (2B) – long-lived primordial radionuclide Bromine-79 Bromine-81 Krypton-78 (2E) – long-lived primordial radionuclide Krypton-80 Krypton-82 Krypton-83 Krypton-84 Krypton-86 (2B) Rubidium-85 Rubidium-87 (B) – long-lived primordial radionuclide Strontium-84 (2E)* Strontium-86 Strontium-87 Strontium-88 Yttrium-89 Zirconium-90 Zirconium-91 Zirconium-92 Zirconium-94 (2B)* Zirconium-96 (2B) – long-lived primordial radionuclide (B also predicted possible) Niobium-93 Molybdenum-92 (2E)* Molybdenum-94 Molybdenum-95 Molybdenum-96 Molybdenum-97 Molybdenum-98 (2B)* Molybdenum-100 (2B) – long-lived primordial radionuclide Technetium – no stable isotopes Ruthenium-96 (2E)* Ruthenium-98 Ruthenium-99 Ruthenium-100 Ruthenium-101 Ruthenium-102 Ruthenium-104 (2B) Rhodium-103 Palladium-102 (2E) Palladium-104 Palladium-105 Palladium-106 Palladium-108 Palladium-110 (2B)* Silver-107 Silver-109 Cadmium-106 (2E)* Cadmium-108 (2E)* Cadmium-110 Cadmium-111 Cadmium-112 Cadmium-113 (B) – long-lived primordial radionuclide Cadmium-114 (2B)* Cadmium-116 (2B) – long-lived primordial radionuclide Indium-113 Indium-115 (B) – long-lived primordial radionuclide Tin-112 (2E)* Tin-114 Tin-115 Tin-116 Tin-117 Tin-118 Tin-119 Tin-120 Tin-122 (2B)* Tin-124 (2B)* Antimony-121 Antimony-123 Tellurium-120 (2E)* Tellurium-122 Tellurium-123 (E)* Tellurium-124 Tellurium-125 Tellurium-126 Tellurium-128 (2B) – long-lived primordial radionuclide Tellurium-130 (2B) – long-lived primordial radionuclide Iodine-127 Xenon-124 (2E) – long-lived primordial radionuclide Xenon-126 (2E) Xenon-128 Xenon-129 Xenon-130 Xenon-131 Xenon-132 Xenon-134 (2B)* Xenon-136 (2B) – long-lived primordial radionuclide Caesium-133 Barium-130 (2E) – long-lived primordial radionuclide Barium-132 (2E)* Barium-134 Barium-135 Barium-136 Barium-137 Barium-138 Lanthanum-138 (B, E) – long-lived primordial radionuclide Lanthanum-139 Cerium-136 (2E)* Cerium-138 (2E)* Cerium-140 Cerium-142 (α, 2B)* Praseodymium-141 Neodymium-142 Neodymium-143 (α) Neodymium-144 (α) – long-lived primordial radionuclide Neodymium-145 (α)* Neodymium-146 (α, 2B)* no mass number 147§ Neodymium-148 (α, 2B)* Neodymium-150 (2B) – long-lived primordial radionuclide Promethium - no stable isotopes Samarium-144 (2E) Samarium-146 (α) – probable long-lived primordial radionuclide Samarium-147 (α) – long-lived primordial radionuclide Samarium-148 (α) – long-lived primordial radionuclide Samarium-149 (α)* Samarium-150 (α) no mass number 151§ Samarium-152 (α) Samarium-154 (2B)* Europium-151 (α) – long-lived primordial radionuclide Europium-153 (α)* Gadolinium-152 (α) – long-lived primordial radionuclide (2E also predicted possible) Gadolinium-154 (α) Gadolinium-155 (α) Gadolinium-156 Gadolinium-157 Gadolinium-158 Gadolinium-160 (2B)* Terbium-159 Dysprosium-156 (α, 2E)* Dysprosium-158 (α) Dysprosium-160 (α) Dysprosium-161 (α) Dysprosium-162 (α) Dysprosium-163 Dysprosium-164 Holmium-165 (α) Erbium-162 (α, 2E)* Erbium-164 (α, 2E) Erbium-166 (α) Erbium-167 (α) Erbium-168 (α) Erbium-170 (α, 2B)* Thulium-169 (α) Ytterbium-168 (α, 2E)* Ytterbium-170 (α) Ytterbium-171 (α) Ytterbium-172 (α) Ytterbium-173 (α) Ytterbium-174 (α) Ytterbium-176 (α, 2B)* Lutetium-175 (α) Lutetium-176 (B) – long-lived primordial radionuclide (α, E also predicted possible) Hafnium-174 (α) – long-lived primordial radionuclide (2E also predicted possible) Hafnium-176 (α) Hafnium-177 (α) Hafnium-178 (α) Hafnium-179 (α) Hafnium-180 (α) Tantalum-180m (α, B, E, IT)* ^ Tantalum-181 (α) Tungsten-180 (α) – long-lived primordial radionuclide (2E also predicted possible) Tungsten-182 (α)* Tungsten-183 (α)* Tungsten-184 (α)* Tungsten-186 (α, 2B)* Rhenium-185 (α) Rhenium-187 (B) – long-lived primordial radionuclide (A also predicted possible) Osmium-184 (α) – long-lived primordial radionuclide (2E also predicted possible) Osmium-186 (α) – long-lived primordial radionuclide Osmium-187 (α) Osmium-188 (α) Osmium-189 (α) Osmium-190 (α) Osmium-192 (α, 2B)* Iridium-191 (α) Iridium-193 (α) Platinum-190 (α) – long-lived primordial radionuclide (2E also predicted possible) Platinum-192 (α)* Platinum-194 (α) Platinum-195 (α)* Platinum-196 (α) Platinum-198 (α, 2B)* Gold-197 (α) Mercury-196 (α, 2E)* Mercury-198 (α) Mercury-199 (α) Mercury-200 (α) Mercury-201 (α) Mercury-202 (α) Mercury-204 (2B) Thallium-203 (α) Thallium-205 (α) Lead-204 (α)* Lead-206 (α)* Lead-207 (α)* Lead-208 (α)* Bismuth ^^ and above – no stable isotopes no mass number 209 and above Bismuth-209 (α) – long-lived primordial radionuclide Thorium-232 (α, SF) – long-lived primordial radionuclide (2B also predicted possible) Uranium-235 (α, SF) – long-lived primordial radionuclide Uranium-238 (α, 2B, SF) – long-lived primordial radionuclide Plutonium-244 (α, SF) – probable long-lived primordial radionuclide (2B also predicted possible)
Abbreviations for predicted unobserved decay:[1][2][3]
α for alpha decay, B for beta decay, 2B for double beta decay, E for electron capture, 2E for double electron capture, IT for isomeric transition, SF for spontaneous fission, * for the nuclides whose half-lives have lower bound. Double beta decay has only been listed when beta decay is not also possible.
^ Tantalum-180m is a "metastable isotope", meaning it is an excited nuclear isomer of tantalum-180. See isotopes of tantalum. However, the half-life of this nuclear isomer is so long that it has never been observed to decay, and it thus is an "observationally stable" primordial nuclide, a rare isotope of tantalum. This is the only nuclear isomer with a half-life so long that it has never been observed to decay. It is thus included in this list.
^^ Bismuth-209 was long believed to be stable, due to its half-life of 2.01×1019 years, which is more than a billion times the age of the universe.
§ Europium-151 and samarium-147 are primordial nuclides with very long half-lives of 4.62×1018 years and 1.066×1011 years, respectively.
See also Isotope geochemistry
List of elements by stability of isotopes
List of nuclides (991 nuclides in order of stability, all with half-lives over one hour)