List of stable isotopes

A stable isotope is a form of an element which is not radioactive.

All elements from hydrogen to lead come in both stable and unstable forms (with the exceptions of technetium, tungsten and promethium). All elements heavier than lead, beginning with bismuth, are only found in radioactive isotopes. Note that tungsten and bismuth do have isotopes which are very slightly radioactive; these have been excluded from this list, which strictly limits to entirely stable entities.

  1. Hydrogen-1
  2. Hydrogen-2
  3. Helium-3
  4. Helium-4
  5. Lithium-6
  6. Lithium-7
  7. Beryllium-9
  8. Boron-10
  9. Boron-11
  10. Carbon-12
  11. Carbon-13
  12. Nitrogen-14
  13. Nitrogen-15
  14. Oxygen-16
  15. Oxygen-17
  16. Oxygen-18
  17. Fluorine-19
  18. Neon-20
  19. Neon-21
  20. Neon-22
  21. Sodium-23
  22. Magnesium-24
  23. Magnesium-25
  24. Magnesium-26
  25. Aluminium-27
  26. Silicon-28
  27. Silicon-29
  28. Silicon-30
  29. Phosphorus-31
  30. Sulfur-32
  31. Sulfur-33
  32. Sulfur-34
  33. Sulfur-36
  34. Chlorine-35
  35. Chlorine-37
  36. Argon-36
  37. Argon-38
  38. Argon-40
  39. Potassium-39
  40. Potassium-41
  41. Calcium-40
  42. Calcium-42
  43. Calcium-43
  44. Calcium-44
  45. Calcium-46
  46. Calcium-48
  47. Scandium-45
  48. Titanium-46
  49. Titanium-47
  50. Titanium-48
  51. Titanium-49
  52. Titanium-50
  53. Vanadium-50
  54. Vanadium-51
  55. Chromium-50
  56. Chromium-52
  57. Chromium-53
  58. Chromium-54
  59. Manganese-55
  60. Iron-54
  61. Iron-56
  62. Iron-57
  63. Iron-58
  64. Cobalt-59
  65. Nickel-58
  66. Nickel-60
  67. Nickel-61
  68. Nickel-62
  69. Nickel-64
  70. Copper-63
  71. Copper-65
  72. Zinc-64
  73. Zinc-66
  74. Zinc-67
  75. Zinc-68
  76. Zinc-70
  77. Gallium-69
  78. Gallium-71
  79. Germanium-70
  80. Germanium-72
  81. Germanium-73
  82. Germanium-74
  83. Germanium-76
  84. Arsenic-75
  85. Selenium-74
  86. Selenium-76
  87. Selenium-77
  88. Selenium-78
  89. Selenium-80
  90. Selenium-82
  91. Bromine-79
  92. Bromine-81
  93. Krypton-80
  94. Krypton-82
  95. Krypton-83
  96. Krypton-84
  97. Krypton-86
  98. Rubidium-85
  99. Rubidium-87
  100. Strontium-84
  101. Strontium-86
  102. Strontium-87
  103. Strontium-88
  104. Yttrium-89
  105. Zirconium-90
  106. Zirconium-91
  107. Zirconium-92
  108. Zirconium-94
  109. Zirconium-96
  110. Niobium-93
  111. Molybdenum-92
  112. Molybdenum-94
  113. Molybdenum-95
  114. Molybdenum-96
  115. Molybdenum-97
  116. Molybdenum-98
  117. Molybdenum-100
  118. Technetium - No stable isotopes
  119. Ruthenium-96
  120. Ruthenium-98
  121. Ruthenium-99
  122. Ruthenium-100
  123. Ruthenium-101
  124. Ruthenium-102
  125. Ruthenium-104
  126. Rhodium-103
  127. Palladium-102
  128. Palladium-104
  129. Palladium-105
  130. Palladium-106
  131. Palladium-108
  132. Palladium-110
  133. Silver-107
  134. Silver-109
  135. Cadmium-106
  136. Cadmium-108
  137. Cadmium-110
  138. Cadmium-111
  139. Cadmium-112
  140. Cadmium-113
  141. Cadmium-114
  142. Cadmium-116
  143. Indium-113
  144. Indium-115
  145. Tin-112
  146. Tin-114
  147. Tin-115
  148. Tin-116
  149. Tin-117
  150. Tin-118
  151. Tin-119
  152. Tin-120
  153. Tin-122
  154. Tin-124
  155. Antimony-121
  156. Antimony-123
  157. Tellurium-120
  158. Tellurium-122
  159. Tellurium-123
  160. Tellurium-124
  161. Tellurium-126
  162. Tellurium-128
  163. Tellurium-130
  164. Iodine-127
  165. Xenon-124
  166. Xenon-126
  167. Xenon-128
  168. Xenon-129
  169. Xenon-130
  170. Xenon-131
  171. Xenon-132
  172. Xenon-134
  173. Xenon-136
  174. Caesium-133
  175. Barium-130
  176. Barium-132
  177. Barium-134
  178. Barium-135
  179. Barium-136
  180. Barium-137
  181. Barium-138
  182. Lanthanum-138
  183. Lanthanum-139
  184. Cerium-136
  185. Cerium-138
  186. Cerium-140
  187. Cerium-142
  188. Praseodymium-141
  189. Neodymium-142
  190. Neodymium-143
  191. Neodymium-144
  192. Neodymium-145
  193. Neodymium-146
  194. Neodymium-148
  195. Neodymium-150
  196. Promethium - No stable isotopes
  197. Samarium-144
  198. Samarium-147
  199. Samarium-148
  200. Samarium-149
  201. Samarium-150
  202. Samarium-152
  203. Samarium-154
  204. Europium-151
  205. Europium-153
  206. Gadolinium-152
  207. Gadolinium-154
  208. Gadolinium-155
  209. Gadolinium-156
  210. Gadolinium-157
  211. Gadolinium-158
  212. Gadolinium-160
  213. Terbium-159
  214. Dysprosium-156
  215. Dysprosium-158
  216. Dysprosium-160
  217. Dysprosium-161
  218. Dysprosium-162
  219. Dysprosium-163
  220. Dysprosium-164
  221. Holmium-165
  222. Erbium-162
  223. Erbium-164
  224. Erbium-166
  225. Erbium-167
  226. Erbium-168
  227. Erbium-170
  228. Thulium-169
  229. Ytterbium-168
  230. Ytterbium-170
  231. Ytterbium-171
  232. Ytterbium-172
  233. Ytterbium-173
  234. Ytterbium-174
  235. Ytterbium-176
  236. Lutetium-175
  237. Lutetium-176
  238. Hafnium-174
  239. Hafnium-176
  240. Hafnium-177
  241. Hafnium-178
  242. Hafnium-179
  243. Hafnium-180
  244. Tantalum-180
  245. Tantalum-181
  246. Tungsten-180
  247. Rhenium-185
  248. Rhenium-187
  249. Osmium-184
  250. Osmium-186
  251. Osmium-187
  252. Osmium-188
  253. Osmium-189
  254. Osmium-190
  255. Osmium-192
  256. Iridium-191
  257. Iridium-193
  258. Platinum-190
  259. Platinum-192
  260. Platinum-194
  261. Platinum-195
  262. Platinum-196
  263. Platinum-198
  264. Gold-197
  265. Mercury-196
  266. Mercury-198
  267. Mercury-199
  268. Mercury-200
  269. Mercury-201
  270. Mercury-202
  271. Mercury-204
  272. Thallium-203
  273. Thallium-205
  274. Lead-204
  275. Lead-206
  276. Lead-207
  277. Lead-208

No elements with an atomic number greater than 82 have any naturally occurring stable isotopes.

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