Editing Stable nuclide (section)

== List of stable nuclides ==
The primordial radionuclides are included for comparison; they are italicized and offset from the list of stable nuclides proper.
{{div col|colwidth=19em}}
{{ordered list
| list-style-type = decimal|[[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
: [[Isotopes of technetium|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<sup>§</sup>''|[[Neodymium-148]] (α, 2B)*
: ''[[Neodymium-150]]'' (2B) – long-lived primordial radionuclide
: [[Isotopes of promethium|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<sup>§</sup>''|[[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)*
: [[Isotopes of bismuth|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)
}}
{{div col end}}
Abbreviations for predicted unobserved decay:<ref>{{cite web | url=http://www.nucleonica.net/unc.aspx | title=Nucleonica :: Web driven nuclear science | access-date=2014-06-14 | archive-date=2017-02-19 | archive-url=https://web.archive.org/web/20170219043412/http://www.nucleonica.net/unc.aspx | url-status=dead }}</ref><ref name="bellidecay"/><ref name="Tretyak2002">{{Cite journal
 |last1=Tretyak |first1=V.I. 
 |last2=Zdesenko |first2=Yu.G. 
 |year=2002
 |title=Tables of Double Beta Decay Data — An Update
 |journal=[[At. Data Nucl. Data Tables]] |volume=80 |issue=1 |pages=83–116
 |doi=10.1006/adnd.2001.0873
|bibcode=2002ADNDT..80...83T }}</ref>

'''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 2.01×10{{sup|19}} years, which is more than a billion times the age of the universe.

'''§''' [[Europium-151]] and [[samarium-147]] are [[primordial nuclide]]s with very long half-lives of 4.62×10{{sup|18}} years and 1.066×10{{sup|11}} years, respectively.