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-78
94. Krypton-80
95. Krypton-82
96. Krypton-83
97. Krypton-84
98. Krypton-86
99. Rubidium-85
100. Rubidium-87
101. Strontium-84
102. Strontium-86
103. Strontium-87
104. Strontium-88
105. Yttrium-89
106. Zirconium-90
107. Zirconium-91
108. Zirconium-92
109. Zirconium-94
110. Zirconium-96
111. Niobium-93
112. Molybdenum-92
113. Molybdenum-94
114. Molybdenum-95
115. Molybdenum-96
116. Molybdenum-97
117. Molybdenum-98
118. Molybdenum-100
119. Technetium – No stable isotopes
120. Ruthenium-96
121. Ruthenium-98
122. Ruthenium-99
123. Ruthenium-100
124. Ruthenium-101
125. Ruthenium-102
126. Ruthenium-104
127. Rhodium-103
128. Palladium-102
129. Palladium-104
130. Palladium-105
131. Palladium-106
132. Palladium-108
133. Palladium-110
134. Silver-107
135. Silver-109
136. Cadmium-106
137. Cadmium-108
138. Cadmium-110
139. Cadmium-111
140. Cadmium-112
141. Cadmium-113
142. Cadmium-114
143. Cadmium-116
144. Indium-113
145. Indium-115
146. Tin-112
147. Tin-114
148. Tin-115
149. Tin-116
150. Tin-117
151. Tin-118
152. Tin-119
153. Tin-120
154. Tin-122
155. Tin-124
156. Antimony-121
157. Antimony-123
158. Tellurium-120
159. Tellurium-122
160. Tellurium-123
161. Tellurium-124
162. Tellurium-126
163. Tellurium-128
164. Tellurium-130
165. Iodine-127
166. Xenon-124
167. Xenon-126
168. Xenon-128
169. Xenon-129
170. Xenon-130
171. Xenon-131
172. Xenon-132
173. Xenon-134
174. Xenon-136
175. Caesium-133
176. Barium-130
177. Barium-132
178. Barium-134
179. Barium-135
180. Barium-136
181. Barium-137
182. Barium-138
183. Lanthanum-138
184. Lanthanum-139
185. Cerium-136
186. Cerium-138
187. Cerium-140
188. Cerium-142
189. Praseodymium-141
190. Neodymium-142
191. Neodymium-143
192. Neodymium-144
193. Neodymium-145
194. Neodymium-146
195. Neodymium-148
196. Neodymium-150
197. Promethium – No stable isotopes
198. Samarium-144
199. Samarium-147
200. Samarium-148
201. Samarium-149
202. Samarium-150
203. Samarium-152
204. Samarium-154
205. Europium-151
206. Europium-153
207. Gadolinium-152
208. Gadolinium-154
209. Gadolinium-155
210. Gadolinium-156
211. Gadolinium-157
212. Gadolinium-158
213. Gadolinium-160
214. Terbium-159
215. Dysprosium-156
216. Dysprosium-158
217. Dysprosium-160
218. Dysprosium-161
219. Dysprosium-162
220. Dysprosium-163
221. Dysprosium-164
222. Holmium-165
223. Erbium-162
224. Erbium-164
225. Erbium-166
226. Erbium-167
227. Erbium-168
228. Erbium-170
229. Thulium-169
230. Ytterbium-168
231. Ytterbium-170
232. Ytterbium-171
233. Ytterbium-172
234. Ytterbium-173
235. Ytterbium-174
236. Ytterbium-176
237. Lutetium-175
238. Lutetium-176
239. Hafnium-174
240. Hafnium-176
241. Hafnium-177
242. Hafnium-178
243. Hafnium-179
244. Hafnium-180
245. Tantalum-180
246. Tantalum-181
247. Tungsten-180
248. Rhenium-185
249. Rhenium-187
250. Osmium-184
251. Osmium-186
252. Osmium-187
253. Osmium-188
254. Osmium-189
255. Osmium-190
256. Osmium-192
257. Iridium-191
258. Iridium-193
259. Platinum-190
260. Platinum-192
261. Platinum-194
262. Platinum-195
263. Platinum-196
264. Platinum-198
265. Gold-197
266. Mercury-196
267. Mercury-198
268. Mercury-199
269. Mercury-200
270. Mercury-201
271. Mercury-202
272. Mercury-204
273. Thallium-203
274. Thallium-205
275. Lead-204
276. Lead-206
277. Lead-207
278. Lead-208