List of nuclides

This list of nuclides shows the >900 observed nuclides that either are stable or, if radioactive, have half-lives longer than one hour. At least 3,000 nuclides have been experimentally characterized. A selection of those with decay half-lives less than 60 minutes are shown.

A nuclide is defined conventionally as an experimentally examined bound collection of one or more protons and zero or more neutrons, that either is stable or has an observed decay mode.

Introduction

254 nuclides are considered stable. Many of these in theory could decay through spontaneous fission, alpha decay, double beta decay, etc. with a very long half-life, but no radioactive decay has yet been observed. Thus the number of stable nuclides is subject to change if some of these 254 are determined to be very long-lived radioactive nuclides in the future. If a decay has been predicted theoretically but never observed experimentally, it is given in parentheses. In theory, spontaneous fission is possible for all elements with atomic numbers >40, but has not been observed for most elements up to lead (82). The list lists nuclides unstable only to this fission mechanism, before nuclides theoretically unstable to additional mechanisms. Those that have been checked for radioactivity are indicated with "> number" and show the lower limit for the half-life based on experimental observation. Such nuclides are considered to be "stable" until a decay has been observed in some fashion. For example, tellurium-123 was reported to be radioactive, but the same experimental group later retracted this report, and it presently remains observationally stable.

The next group is the primordial radioactive nuclides. These have been measured to be radioactive, or decay products have been identified (Te-130, Ba-130). There are (currently) 34 of these, of which 28 have half-lives considerably longer than the age of the universe (13.8 billion years). With most of these 28, decay is difficult to observe and for most purposes they can be regarded as effectively stable. Bismuth-209 is notable as the only natural occurring isotope of an element long considered stable. A further 4 nuclides, thorium-232, uranium-238, potassium-40 and uranium-235 have half lives between 14 billion and 700 million years, which means they have experienced measurable decay since the formation of the solar system about 4.6 billion years ago, but still exist on earth in significant quantities. They are the primary source of radiogenic heat and radioactive decay products. The final two, plutonium-244 and samarium-146 have half-lives just long enough (80 and 68 million years) to survive from the formation of the solar system and be present on earth in trace quantities (having survived 57 and 67 half lives). Together, there are a total of 286 primordial nuclides.

The list then covers the ~700 radionuclides with half-lives longer than 1 hour. There are also more than 3000 radionuclides with half lives less than an hour, listed are those that exist naturally in decay chains

Over 60 nuclides that have half-lives too short to be primordial can be detected in nature as a result of later production by natural processes, mostly in trace amounts. These include ~44 radionuclides occurring in the decay chains of primordial uranium and thorium (radiogenic nuclides), such as Radon-222. Others are the products of interactions with energetic cosmic-rays (e.g. cosmic ray spallation) (cosmogenic nuclides) such as carbon-14. This gives a total of about 350 naturally occurring nuclides. Other nuclides may be occasionally produced naturally but are difficult to detect by rare cosmogenic interactions or as a result of other natural nuclear reactions (nucleogenic nuclides).

Further shorter lived nuclides have been detected in the spectra of stars (technetium, promethium, californium). The remaining nuclides are known solely from artificial nuclear transmutation. Some, such as caesium-137, are found in the environment but as a result of contamination from man-made nuclear fission product releases (nuclear weapons, nuclear reactors, and other processes). Other are produced artificially for industrial or medical purposes.

Summary table for numbers of each class of nuclides

This is a summary table^[1] of decay class for the ~986 nuclides with half-lives longer than one hour, given in this list of nuclides. Numbers may change slightly in the future, as nuclides radioactive only in theory are observed to be radioactive, half-life measurements improve, or new isotopes are discovered.

Stability class	Number of nuclides	Running total	Naturally Occurring	Nuclear Isomers
Stable nuclides	254	254	254	1
Radioactive
Primordial radionuclides Half-life > 50m years.	32	286	32	0
Half-life 1 to 50m years.	121	407	~21	10
Half-life: 1 day to 1 year.	~269	~676	~11	~40
Half-life: 1 hour to 1 day.	~310	~986	~9	~66
Half-life < 1 hour.	>3000	>4000	~29	~2000

List legend

All the radionuclides, starting with the longest-lived primordial radionuclides, are sorted by decreasing half-life, but the tables are sortable by other criteria.

no (number)

A running positive integer for reference. Especially for nuclides with short half-lives, this number, i.e. position in this table, might be changed in the future.

nuclide column

Nuclide identifiers are given by their mass number A and the symbol for the corresponding chemical element (implies a unique proton number). In the cases that this is not the ground state, this is indicated by a m for metastable appended to the mass number. Sorting here sorts by mass number.

A, Z, N

The mass number, number of protons and number of neutrons is provided.

energy column

The column labeled "energy" denotes the energy equivalent of the difference between the mass per nucleon of this nuclide and the mass of a neutron (so all nuclides get a positive value) in MeV, formally: m_n − m_nuclide / A. Thus the mass of the nuclide (in Daltons) is A (m_n − E / k} where E is the energy, m_n is 1.008664915 Da and k = 931.4941 the conversion factor between MeV and Daltons.

half-life column

The main column shows times in seconds (31,556,926 seconds = 1 year), a second column showing half life in more usual units (year,days) is also provided. Entries starting with a ">" indicates that no decay has ever been observed, with null experiments establishing lower limits for the half-life. Such elements are considered stable unless a decay can be observed (establishing an actual estimate for the half-life). Note half lives may be imprecise estimates and can be subject to significant revision.

decay mode column

α	α decay
β^−	β^− decay
β^−β^−	double β^− decay
ε	electron capture
β^+	β^+ decay
β^+β^+	double β^+ decay
SF	spontaneous fission
IT	isomeric transition

Decay modes in parentheses are still not observed through experiment but are, by their energy, predicted to occur. Spontaneous fission is not shown as a theoretical decay mode for stable nuclides where other modes are possible.

decay energy column

Multiple values for (maximal) decay energy are mapped to decay modes in their order. The decay energy listed is for the specific nuclide only, not for the whole decay chain. It includes the energy lost to neutrinos.

notes column

CG: Cosmogenic nuclide;

DP: Naturally occurring decay product (of Thorium-232, Uranium-238 and Uranium 235;

FP: Fission product of Uranium-235 / Plutonium-239 (only those with a half life over one day are shown);

IM: Industry or medically used radionuclide.^[2]

List

Stable nuclides

no	nuclide	A	Z	N	energy	half-life (s)	decay mode	decay energy (Mev)
1	^56Fe	56	26	30	9.153567
2	^62Ni	62	28	34	9.147877
3	^60Ni	60	28	32	9.145862
4	^58Fe	58	26	32	9.142938
5	^52Cr	52	24	28	9.137037
6	^57Fe	57	26	31	9.127119
7	^59Co	59	27	32	9.126046
8	^54Cr	54	24	30	9.125633
9	^61Ni	61	28	33	9.124129
10	^55Mn	55	25	30	9.120611
11	^64Ni	64	28	36	9.119754
12	^66Zn	66	30	36	9.115258
13	^53Cr	53	24	29	9.114435
14	^63Cu	63	29	34	9.112272
15	^65Cu	65	29	36	9.106154
16	^68Zn	68	30	38	9.100845
17	^50Ti	50	22	28	9.099861
18	^51V	51	23	28	9.094884
19	^67Zn	67	30	37	9.084468
20	^48Ti	48	22	26	9.081488
21	^72Ge	72	32	40	9.079465
22	^70Ge	70	32	38	9.079372
23	^69Ga	69	31	38	9.076078
24	^88Sr	88	38	50	9.070438
25	^74Ge	74	32	42	9.063522
26	^49Ti	49	22	27	9.062323
27	^76Se	76	34	42	9.061485
28	^71Ga	71	31	40	9.059218
29	^78Se	78	34	44	9.058842
30	^90Zr	90	40	50	9.057631
31	^89Y	89	39	50	9.056743
32	^86Sr	86	38	48	9.054160
33	^82Kr	82	36	46	9.054126
34	^84Kr	84	36	48	9.052649
35	^73Ge	73	32	41	9.048006
36	^87Sr	87	38	49	9.046964
37	^75As	75	33	42	9.045093
38	^80Kr	80	36	44	9.044984
39	^77Se	77	34	43	9.040153
40	^85Rb	85	37	48	9.037998
41	^91Zr	91	40	51	9.037156
42	^83Kr	83	36	47	9.034966
43	^79Br	79	35	44	9.034220
44	^81Br	81	35	46	9.033979
45	^92Zr	92	40	52	9.032783
46	^46Ti	46	22	24	9.030532
47	^47Ti	47	22	25	9.027336
48	^44Ca	44	20	24	9.013793
49	^42Ca	42	20	22	8.989116
50	^38Ar	38	18	20	8.984870
51	^45Sc	45	21	24	8.983945
52	^43Ca	43	20	23	8.964551
53	^34S	34	16	18	8.951675
54	^40Ar	40	18	22	8.947325
55	^41K	41	19	22	8.938623
56	^39K	39	19	20	8.938174
57	^37Cl	37	17	20	8.929760
58	^36S	36	16	20	8.923108
59	^35Cl	35	17	18	8.900285
60	^30Si	30	14	16	8.885761
61	^32S	32	16	16	8.884318
62	^33S	33	16	17	8.876964
63	^31P	31	15	16	8.859744
64	^28Si	28	14	14	8.838935
65	^29Si	29	14	15	8.826327
66	^27Al	27	13	14	8.708242
67	^26Mg	26	12	14	8.694981
68	^24Mg	24	12	12	8.651911
69	^25Mg	25	12	13	8.599047
70	^23Na	23	11	12	8.485675
71	^22Ne	22	10	12	8.436087
72	^20Ne	20	10	10	8.423422
73	^16O	16	8	8	8.367390
74	^21Ne	21	10	11	8.344280
75	^19F	19	9	10	8.149612
76	^17O	17	8	9	8.118904
77	^18O	18	8	10	8.114744
78	^12C	12	6	6	8.071327
79	^15N	15	7	8	8.064594
80	^14N	14	7	7	7.866827
81	^13C	13	6	7	7.830943
82	^4He	4	2	2	7.465077
83	^11B	11	5	6	7.283337
84	^10B	10	5	5	6.866257
85	^9Be	9	4	5	6.810483
86	^7Li	7	3	4	5.941599
87	^6Li	6	3	3	5.723527
88	^3He	3	2	1	3.094327
89	^2H	2	1	1	1.503327
90	^1H	1	1	0	0.782327
91	^94Mo	94	42	52	9.011856		(SF)	< 4.485
92	^93Nb	93	41	52	9.009051		(SF)	< 0.943
93	^96Mo	96	42	54	8.996229		(SF)	< 5.771
94	^95Mo	95	42	53	8.994564		(SF)	< 4.531
95	^97Mo	97	42	55	8.973806		(SF)	< 6.226
96	^98Ru	98	44	54	8.971572		(SF)	< 11.690
97	^100Ru	100	44	56	8.963517		(SF)	< 13.634
98	^99Ru	99	44	55	8.956348		(SF)	< 12.368
99	^102Ru	102	44	58	8.944837		(SF)	< 12.049
100	^101Ru	101	44	57	8.942117		(SF)	< 13.205
101	^104Pd	104	46	58	8.930847		(SF)	< 18.969
102	^103Rh	103	45	58	8.925910		(SF)	< 15.462
103	^106Pd	106	46	60	8.919460		(SF)	< 16.806
104	^105Pd	105	46	59	8.913356		(SF)	< 18.247
105	^108Pd	108	46	62	8.900253		(SF)	< 16.102
106	^107Ag	107	47	60	8.897514		(SF)	< 20.512
107	^110Cd	110	48	62	8.892718		(SF)	< 22.486
108	^109Ag	109	47	62	8.885300		(SF)	< 19.241
109	^112Cd	112	48	64	8.880077		(SF)	< 20.733
110	^111Cd	111	48	63	8.875445		(SF)	< 21.883
111	^114Sn	114	50	64	8.865722		(SF)	< 27.965
112	^113In	113	49	64	8.862212		(SF)	< 24.281
113	^116Sn	116	50	66	8.860362		(SF)	< 25.905
114	^115Sn	115	50	65	8.854249		(SF)	< 26.791
115	^118Sn	118	50	68	8.848073		(SF)	< 23.815
116	^117Sn	117	50	67	8.843977		(SF)	< 25.334
117	^120Sn	120	50	70	8.830537		(SF)	< 21.824
118	^119Sn	119	50	69	8.828201		(SF)	< 23.140
119	^121Sb	121	51	70	8.811783		(SF)	< 25.718
120	^122Te	122	52	70	8.811606		(SF)	< 30.974
121	^124Te	124	52	72	8.801364		(SF)	< 28.221
122	^123Sb	123	51	72	8.796727		(SF)	< 23.454
123	^126Te	126	52	74	8.786126		(SF)	< 26.011
124	^125Te	125	52	73	8.783505		(SF)	< 26.966
125	^128Xe	128	54	74	8.773359		(SF)	< 35.047
126	^127I	127	53	74	8.771981		(SF)	< 29.961
127	^130Xe	130	54	76	8.762725		(SF)	< 32.483
128	^129Xe	129	54	75	8.758904		(SF)	< 33.947
129	^132Xe	132	54	78	8.747695		(SF)	< 30.885
130	^131Xe	131	54	77	8.746253		(SF)	< 31.140
131	^134Ba	134	56	78	8.735133		(SF)	< 40.520
132	^133Cs	133	55	78	8.733515		(SF)	< 34.753
133	^136Ba	136	56	80	8.724908		(SF)	< 38.041
134	^135Ba	135	56	79	8.722072		(SF)	< 39.357
135	^137Ba	137	56	81	8.711628		(SF)	< 35.722
136	^138Ba	138	56	82	8.710904		(SF)	< 34.302
137	^140Ce	140	58	82	8.700494		(SF)	< 43.633
138	^139La	139	57	82	8.698892		(SF)	< 38.944
139	^141Pr	141	59	82	8.681405		(SF)	< 48.450
140	^142Nd	142	60	82	8.676646		(SF)	< 53.264
141	^156Gd	156	64	92	8.536342		(SF)	< 71.541
142	^157Gd	157	64	93	8.522478		(SF)	< 70.531
143	^158Gd	158	64	94	8.518775		(SF)	< 70.965
144	^159Tb	159	65	94	8.508680		(SF)	< 74.878
145	^163Dy	163	66	97	8.478607		(SF)	< 79.055
146	^164Dy	164	66	98	8.473604		(SF)	< 79.499
147	^54Fe	54	26	28	9.113040		(β^+β^+)	0.6800
148	^58Ni	58	28	30	9.109736		(β^+β^+)	1.9258
149	^74Se	74	34	40	9.047175		(β^+β^+)	1.2094
150	^80Se	80	34	46	9.043326		(β^−β^−)	0.1339
151	^86Kr	86	36	50	9.039532		(β^−β^−)	1.2556
152	^84Sr	84	38	46	9.031375		(β^+β^+)	1.7867
153	^92Mo	92	42	50	9.014860		(β^+β^+)	1.6491
154	^94Zr	94	40	54	8.999698		(β^−β^−)	1.1440
155	^98Mo	98	42	56	8.970426		(β^−β^−)	0.1125
156	^96Ru	96	44	52	8.967911		(β^+β^+)	2.7188
157	^102Pd	102	46	56	8.933337		(β^+β^+)	1.1720
158	^104Ru	104	44	60	8.918337		(β^−β^−)	1.2997
159	^36Ar	36	18	18	8.911105		(β^+β^+)	0.4335
160	^110Pd	110	46	64	8.874500		(β^−β^−)	1.9997
161	^112Sn	112	50	62	8.862944		(β^+β^+)	1.9222
162	^122Sn	122	50	72	8.808590		(β^−β^−)	0.3661
163	^124Sn	124	50	74	8.782914		(β^−β^−)	2.2870
164	^126Xe	126	54	72	8.779010		(β^+β^+)	0.8973
165	^143Nd	143	60	83	8.658792		(α)	0.5214
166	^144Sm	144	62	82	8.640577		(β^+β^+, α)	1.7811, 0.0761
167	^145Nd	145	60	85	8.632963		(α)	1.5784
168	^146Nd	146	60	86	8.625649		(β^−β^−, α)	0.0702, 1.1822
169	^148Nd	148	60	88	8.594388		(β^−β^−, α)	1.9288, 0.5986
170	^150Sm	150	62	88	8.585043		(α)	1.4495
171	^152Sm	152	62	90	8.563227		(α)	0.2203
172	^153Eu	153	63	90	8.550893		(α)	0.2736
173	^154Gd	154	64	90	8.549985		(α)	0.0812
174	^154Sm	154	62	92	8.541857		(β^−β^−)	1.2510
175	^155Gd	155	64	91	8.536341		(α)	0.0812
176	^156Dy	156	66	90	8.523443		(β^+β^+, α)	2.0108, 1.7579
177	^158Dy	158	66	92	8.516973		(β^+β^+, α)	0.2833, 0.8748
178	^160Dy	160	66	94	8.506816		(α)	0.4387
179	^161Dy	161	66	95	8.494067		(α)	0.3443
180	^162Dy	162	66	96	8.492234		(α)	0.0847
181	^162Er	162	68	94	8.480852		(β^+β^+, α)	1.8445, 1.6460
182	^164Er	164	68	96	8.473462		(β^+β^+, α)	0.0241, 1.3041
183	^165Ho	165	67	98	8.464689		(α)	0.1394
184	^166Er	166	68	98	8.462482		(α)	0.8309
185	^167Er	167	68	99	8.450350		(α)	0.6657
186	^168Er	168	68	100	8.446308		(α)	0.5527
187	^168Yb	168	70	98	8.437845		(β^+β^+, α)	1.4221, 1.9508
188	^169Tm	169	69	100	8.433931		(α)	1.2004
189	^170Yb	170	70	100	8.428792		(α)	1.7376
190	^170Er	170	68	102	8.424945		(β^−β^−, α)	0.6536, 0.0502
191	^171Yb	171	70	101	8.418182		(α)	1.5589
192	^172Yb	172	70	102	8.415864		(α)	1.3103
193	^173Yb	173	70	103	8.404023		(α)	0.9459
194	^174Yb	174	70	104	8.398624		(α)	0.7401
195	^175Lu	175	71	104	8.386589		(α)	1.6197
196	^176Hf	176	72	104	8.381427		(α)	2.2550
197	^177Hf	177	72	105	8.370139		(α)	2.2449
198	^178Hf	178	72	106	8.365958		(α)	2.0832
199	^179Hf	179	72	107	8.353293		(α)	1.8065
200	^180Hf	180	72	108	8.347930		(α)	1.2828
201	^181Ta	181	73	108	8.338961		(α)	1.5259
202	^185Re	185	75	110	8.308204		(α)	2.1947
203	^187Os	187	76	111	8.291746		(α)	2.7202
204	^188Os	188	76	112	8.290138		(α)	2.1426
205	^189Os	189	76	113	8.277599		(α)	1.9757
206	^190Os	190	76	114	8.275045		(α)	1.3784
207	^191Ir	191	77	114	8.263508		(α)	2.0839
208	^192Pt	192	78	114	8.260353		(α)	2.4181
209	^192Os	192	76	116	8.258202		(β^−β^−, α)	0.4135, 0.3622
210	^194Pt	194	78	116	8.250519		(α)	1.5045
211	^193Ir	193	77	116	8.250259		(α)	1.0173
212	^195Pt	195	78	117	8.239516		(α)	1.1581
213	^196Pt	196	78	118	8.237896		(α)	0.7942
214	^196Hg	196	80	116	8.233710		(β^+β^+, α)	0.8197, 2.0273
215	^197Au	197	79	118	8.229404		(α)	0.9545
216	^198Hg	198	80	118	8.227663		(α)	1.3833
217	^198Pt	198	78	120	8.222378		(β^−β^−, α)	1.0472, 0.0870
218	^199Hg	199	80	119	8.219805		(α)	0.8242
219	^200Hg	200	80	120	8.218848		(α)	0.7178
220	^201Hg	201	80	121	8.208956		(α)	0.3341
221	^202Hg	202	80	122	8.206703		(α)	0.1363
222	^203Tl	203	81	122	8.198230		(α)	0.9108
223	^204Hg	204	80	124	8.192358		(β^−β^−)	0.4163
224	^205Tl	205	81	124	8.187526		(α)	0.1567
225	^206Pb	206	82	124	8.186791		(α)	1.1366
226	^207Pb	207	82	125	8.179791		(α)	0.3915
227	^208Pb	208	82	126	8.175888		(α)	0.5188
228	^134Xe	134	54	80	8.728973	> 1.830×10^30	β^−β^−	0.825
229	^40Ca	40	20	20	8.942485	> 9.467×10^28	β^+β^+	0.194
230	^132Ba	132	56	76	8.741288	> 9.467×10^28	β^+β^+	0.846
231	^78Kr	78	36	42	9.022349	> 7.258×10^27	β^+β^+	2.846
232	^160Gd	160	64	96	8.496009	> 9.783×10^26	β^−β^−	1.729
233	^184W	184	74	110	8.319737	> 9.152×10^26	α	1.656
234	^186W	186	74	112	8.299873	> 8.521×10^26	α	1.123
235	^183W	183	74	109	8.324699	> 4.102×10^26	α	1.680
236	^182W	182	74	108	8.336424	> 2.619×10^26	α	1.772
237	^114Cd	114	48	66	8.860985	> 2.020×10^26	β^−β^−	0.540
238	^50Cr	50	24	26	9.076517	> 4.102×10^25	β^+β^+	1.167
239	^108Cd	108	48	60	8.897735	> 3.156×10^25	β^+β^+	0.272
240	^142Ce	142	58	84	8.666666	> 8.205×10^24	β^−β^−, (α)	1.417, 1.298
241	^106Cd	106	48	58	8.893327	> 8.205×10^24	β^+β^+	2.770
242	^176Yb	176	70	106	8.375271	> 5.049×10^24	β^−β^−, (α)	1.083, 0.570
243	^204Pb	204	82	122	8.194414	> 4.418×10^24	α	1.972
244	^124Xe	124	54	70	8.778264	> 3.471×10^24	β^+β^+	2.864
245	^123Te	123	52	71	8.796302	> 2.903×10^24	β^+	0.052
246	^64Zn	64	30	34	9.102634	> 8.836×10^23	(β^+β^+)	1.096
247	^120Te	120	52	68	8.816369	> 6.943×10^23	β^+β^+	1.700
248	^70Zn	70	30	40	9.065109	> 4.102×10^23	β^−β^−	0.998
249	^46Ca	46	20	26	9.009047	> 8.836×10^22	β^−β^−	0.988
250	^149Sm	149	62	87	8.589058	> 6.312×10^22	α	1.870
251	^180mTa	180	73	107	8.342767	> 3.787×10^22	(β^−, ε, α)	0.783, 0.929, 2.103
252	^138Ce	138	58	80	8.705878	> 2.840×10^21	β^+β^+	0.694
253	^136Ce	136	58	78	8.707122	> 2.209×10^21	β^+β^+	2.419
254	^184Os	184	76	108	8.311850	> 1.767×10^21	α, (β^+β^+)	2.963, 1.451

Primordial radioactive nuclides

no	nuclide	A	Z	N	energy	half-life (s)	decay mode	decay energy (MeV)	half-life (years)
255	^128Te	128	52	76	8.743261	6.94×10^31	β^−β^−	2.530	2.2×10^24
256	^136Xe	136	54	82	8.706805	7.5×10^28	β^−β^−	2.462	2.38×10^21
257	^76Ge	76	32	44	9.034656	5.642×10^28	β^−β^−	2.039	1.8×10^21
258	^130Ba	130	56	74	8.742574	3.79×10^28	εε	2.620	1.2×10^21
259	^82Se	82	34	48	9.017596	3.408×10^27	β^−β^−	2.995	1.1×10^20
260	^116Cd	116	48	68	8.836146	9.783×10^26	β^−β^−	2.809	3.1×10^19
261	^48Ca	48	20	28	8.992452	7.258×10^26	β^−β^−, β^−	4.274, 0.0058	2.3×10^19
262	^96Zr	96	40	56	8.961359	6.3×10^26	β^−β^−	3.348	2.0×10^19
263	^209Bi	209	83	126	8.158689	5.996×10^26	α	3.137	1.9×10^19
264	^130Te	130	52	78	8.766578	2.777×10^26	β^−β^−	0.868	8.8×10^18
265	^150Nd	150	60	90	8.562594	2.493×10^26	β^−β^−	3.367	7.9×10^18
266	^100Mo	100	42	58	8.933167	2.461×10^26	β^−β^−	3.035	7.8×10^18
267	^151Eu	151	63	88	8.565759	1.578×10^26	α	1.9644	5.0×10^18
268	^180W	180	74	106	8.347127	5.680×10^25	α	2.509	1.8×10^18
269	^50V	50	23	27	9.055759	4.418×10^24	β^+, β^−	2.205, 1.038	1.4×10^17
270	^113Cd	113	48	65	8.859372	2.430×10^23	β^−	0.321	7.7×10^15
271	^148Sm	148	62	86	8.607423	2.209×10^23	α	1.986	7.0×10^15
272	^144Nd	144	60	84	8.652947	7.227×10^22	α	1.905	2.29×10^15
273	^186Os	186	76	110	8.302508	6.312×10^22	α	2.823	2.0×10^15
274	^174Hf	174	72	102	8.392287	6.312×10^22	α	2.497	2.0×10^15
275	^115In	115	49	66	8.849910	1.392×10^22	β^−	0.499	4.4×10^14
276	^152Gd	152	64	88	8.562868	3.408×10^21	α	2.203	1.1×10^14
277	^190Pt	190	78	112	8.267764	2.051×10^19	α	3.252	6.5×10^11
278	^147Sm	147	62	85	8.610593	3.345×10^18	α	2.310	1.06×10^11
279	^138La	138	57	81	8.698320	3.219×10^18	ε, β^−	1.737, 1.044	1.02×10^11
280	^87Rb	87	37	50	9.043718	1.568×10^18	β^−	0.283	4.97×10^10
281	^187Re	187	75	112	8.291732	1.300×10^18	β^−, α	0.0026, 1.653	4.12×10^10
282	^176Lu	176	71	105	8.374665	1.187×10^18	β^−	1.193	3.764×10^10
283	^232Th	232	90	142	7.918533	4.434×10^17	α, SF	4.083	1.406×10^10
284	^238U	238	92	146	7.872551	1.410×10^17	α, SF	4.270	4.471×10^9
285	^40K	40	19	21	8.909707	3.938×10^16	β^−, ε, β^+	1.311, 1.505, 1.505	1.25×10^9
286	^235U	235	92	143	7.897198	2.222×10^16	α, SF	4.679	704×10^6

Radionuclides with a half life of 1 day to 100 million years

no	nuclide	A	Z	N	energy	half-life (s)	decay mode	half-life (years/days)	notes
287	^244Pu	244	94	150	7.826221	2.525×10^15	α, SF	8.0×10^7 y
288	^146Sm	146	62	84	8.626136	2.144×10^15	α	6.8×10^7 y
289	^92Nb	92	41	51	9.010980	1.095×10^15	β^+, β^−	34.7×10^6 y	CG
290	^236U	236	92	144	7.891470	7.391×10^14	α, SF	23.4×10^6 y	DP
291	^205Pb	205	82	123	8.187279	5.459×10^14	β^+	17.3×10^6 y	CG
292	^129I	129	53	76	8.757397	4.955×10^14	β^−	15.7×10^6 y	CG, FP
293	^247Cm	247	96	151	7.806008	4.923×10^14	α	15.6×10^6 y
294	^182Hf	182	72	110	8.324399	2.809×10^14	β^−	8.90×10^6 y	(DP)
295	^107Pd	107	46	61	8.897197	2.051×10^14	β^−	6.50×10^6 y	FP
296	^98Tc	98	43	55	8.953246	1.325×10^14	β^−	4.20×10^6 y
297	^53Mn	53	25	28	9.103175	1.180×10^14	β^+	3.74×10^6 y	CG
298	^154Dy	154	66	88	8.528457	9.467×10^13	α	3.00×10^6 y
299	^60Fe	60	26	34	9.094861	8.268×10^13	β^−	2.62×10^6 y
300	^97Tc	97	43	54	8.970503	8.203×10^13	β^+	2.60×10^6 y
301	^210mBi	210	83	127	8.140473	9.594×10^13	α	2.58×10^6 y
302	^135Cs	135	55	80	8.720082	7.258×10^13	β^−	2.30×10^6 y	FP
303	^237Np	237	93	144	7.881989	6.766×10^13	α, SF	2.14×10^6 y	DP
304	^150Gd	150	64	86	8.576454	5.649×10^13	α	1.79×10^6 y
305	^93Zr	93	40	53	9.008069	4.828×10^13	β^−	1.53×10^6 y	FP
306	^10Be	10	4	6	6.810657	4.765×10^13	β^−	1.51×10^6 y	CG
307	^26Al	26	13	13	8.540954	2.263×10^13	β^+	717000 y	CG
308	^242Pu	242	94	148	7.845218	1.183×10^13	α, SF	375000 y
309	^208Bi	208	83	125	8.162049	1.161×10^13	β^+	368000 y
310	^248Cm	248	96	152	7.799586	1.098×10^13	α, SF	348000 y
311	^36Cl	36	17	19	8.891380	9.499×10^12	β^−, β^+	301000 y	CG, IM
312	^79Se	79	34	45	9.032310	9.309×10^12	β^−	295000 y	FP
313	^234U	234	92	142	7.908308	7.747×10^12	α, SF	245500 y	DP
314	^126Sn	126	50	76	8.754026	7.258×10^12	β^−	223000 y	FP
315	^81Kr	81	36	45	9.030513	7.227×10^12	β^+	229000 y	CG
316	^99Tc	99	43	56	8.953379	6.662×10^12	β^−	211100 y	FP, DP
317	^186mRe	186	75	111	8.295958	6.312×10^12	IT	200000 y
318	^233U	233	92	141	7.912873	5.024×10^12	α, SF	159200 y	DP
319	^236Np	236	93	143	7.887514	4.860×10^12	β^+, β^−, α	154000 y
320	^41Ca	41	20	21	8.928347	3.219×10^12	β^+	102000 y	CG
321	^59Ni	59	28	31	9.107863	2.398×10^12	β^+	76000 y
322	^230Th	230	90	140	7.937136	2.379×10^12	α, SF	75400 y	DP
323	^137La	137	57	80	8.707101	1.893×10^12	β^+	60000 y
324	^202Pb	202	82	120	8.199714	1.657×10^12	β^+, α	52500 y
325	^231Pa	231	91	140	7.926627	1.034×10^12	α, SF	32770 y	DP
326	^239Pu	239	94	145	7.868022	7.609×10^11	α, SF	24110 y	IM, DP
327	^94Nb	94	41	53	8.990099	6.406×10^11	β^−	20300 y	CG
328	^245Cm	245	96	149	7.822329	2.682×10^11	α, SF	8500 y
329	^250Cm	250	96	154	7.779371	2.619×10^11	SF, α, β^−	8300 y
330	^243Am	243	95	148	7.836035	2.326×10^11	α, SF	7371 y
331	^229Th	229	90	139	7.942127	2.316×10^11	α	7339 y	DP
332	^240Pu	240	94	146	7.862465	2.070×10^11	α, SF	6560 y	DP
333	^14C	14	6	8	7.855620	1.799×10^11[3]	β^−	5701 y[3]	CG, IM
334	^246Cm	246	96	150	7.816781	1.502×10^11	α, SF	4760 y
335	^163Ho	163	67	96	8.478591	1.442×10^11	β^+	4570 y
336	^93Mo	93	42	51	9.004693	1.262×10^11	β^+	4000 y
337	^226Ra	226	88	138	7.966597	5.049×10^10	α	1600 y	DP
338	^247Bk	247	97	150	7.806182	4.355×10^10	α	1380 y
339	^166mHo	166	67	99	8.451273	3.787×10^10	β^−	1200 y
340	^251Cf	251	98	153	7.775969	2.834×10^10	α, SF	898 y
341	^91Nb	91	41	50	9.023327	2.146×10^10	β^+	680 y
342	^194Hg	194	80	114	8.237271	1.401×10^10	β^+	444 y
343	^108mAg	108	47	61	8.881439	1.382×10^10	β^+, IT	437.9 y
344	^241Am	241	95	146	7.851676	1.364×10^10	α, SF	432.2 y	IM
345	^249Cf	249	98	151	7.791305	1.108×10^10	α, SF	351.1 y
346	^39Ar	39	18	21	8.923686	8.489×10^9	β^−	269 y	CG
347	^192mIr	192	77	115	8.251875	7.605×10^9	IT	241 y
348	^158Tb	158	65	93	8.511055	5.680×10^9	β^+, β^−	180 y
349	^242mAm	242	95	147	7.841913	4.450×10^9	IT, α, SF	141 y
350	^32Si	32	14	18	8.823856	4.166×10^9	β^−	132 y	CG
351	^209Po	209	84	125	8.149633	3.951×10^9	α, β^+	[4]125.2 y
352	^63Ni	63	28	35	9.111210	3.159×10^9	β^−	101 y	IM
353	^151Sm	151	62	89	8.565251	2.840×10^9	β^−	90.0 y	FP
354	^238Pu	238	94	144	7.877358	2.768×10^9	α, SF	87.7 y	IM, DP
355	^157Tb	157	65	92	8.522096	2.241×10^9	β^+	71.0 y
356	^148Gd	148	64	84	8.586706	2.237×10^9	α	70.9 y
357	^232U	232	92	140	7.922143	2.174×10^9	α, SF	68.9 y	(DP)
358	^44Ti	44	22	22	8.924702	1.893×10^9	β^+	59.1 y
359	^193Pt	193	78	115	8.249965	1.578×10^9	β^+	50.0 y
360	^121mSn	121	50	71	8.808499	1.385×10^9	IT, β^−	43.89 y
361	^150Eu	150	63	87	8.569974	1.164×10^9	β^+	36.89 y
362	^42Ar	42	18	24	8.890923	1.038×10^9	β^−	32.9 y
363	^207Bi	207	83	124	8.168209	1.038×10^9	β^+	31.6 y
364	^178m2Hf	178	72	106		9.776×10^8	IT	31 y
365	^137Cs	137	55	82	8.703047	9.477×10^8	β^−	30.1 y	FP, IM
366	^243Cm	243	96	147	7.836004	9.183×10^8	α, β^+, SF	29.1 y
367	^90Sr	90	38	52	9.026239	9.120×10^8	β^−	28.9 y	FP, IM
368	^210Pb	210	82	128	8.141462	7.006×10^8	β^−, α	22.2 y	DP, IM
369	^227Ac	227	89	138	7.957447	6.871×10^8	β^−, α	21.77 y	DP
370	^244Cm	244	96	148	7.831763	5.712×10^8	α, SF	18.1 y	(DP)
371	^145Pm	145	61	84	8.631838	5.586×10^8	β^+, α	17.7 y
372	^93mNb	93	41	52		5.084×10^8	IT	16.1 y
373	^241Pu	241	94	147	7.851590	4.510×10^8	β^−, α, SF	14.3 y
374	^113mCd	113	48	65		4.380×10^8	β^−, IT	13.9 y	FP
375	^152Eu	152	63	89	8.550897	4.262×10^8	β^+, β^−	13.51 y
376	^250Cf	250	98	152	7.786640	4.128×10^8	α, SF	13.08 y
377	^3H	3	1	2	3.087994	3.888×10^8	β^−	12.32 y	CG, IM
378	^85Kr	85	36	49	9.029919	3.384×10^8	β^−	10.72 y	FP, IM
379	^133Ba	133	56	77	8.729624	3.319×10^8	β^+	10.52 y
380	^248Bk	248	97	151	7.796811	> 2.840×10^8	α	9.00 y
381	^154Eu	154	63	91	8.537200	2.711×10^8	β^−, β^+	8.60 y
382	^194Os	194	76	118	8.238508	1.893×10^8	β^−	6.0 y
383	^228Ra	228	88	140	7.944390	1.815×10^8	β^−	5.75 y	DP
384	^146Pm	146	61	85	8.615574	1.745×10^8	β^+, β^−	5.53 y
385	^60Co	60	27	33	9.098811	1.663×10^8	β^−	5.27 y	IM
386	^155Eu	155	63	92	8.534711	1.500×10^8	β^−	4.75 y	FP
387	^204Tl	204	81	123	8.190671	1.193×10^8	β^−, β^+	3.78 y	IM
388	^174Lu	174	71	103	8.390726	1.045×10^8	β^+	3.31 y
389	^101Rh	101	45	56	8.936753	1.041×10^8	β^+	3.3 y
390	^102mRh	102	45	57	8.920680	9.152×10^7	β^+, IT	2.9 y
391	^208Po	208	84	124	8.155315	9.145×10^7	α, β^+	2.898 y
392	^236Pu	236	94	142	7.889536	9.019×10^7	α, SF	2.858 y
393	^125Sb	125	51	74	8.777367	8.705×10^7	β^−	2.759 y	FP
394	^55Fe	55	26	29	9.116407	8.637×10^7	β^+	2.737 y
395	^252Cf	252	98	154	7.769605	8.347×10^7	α, SF	2.645 y	IM
396	^147Pm	147	61	86	8.609068	8.279×10^7	β^−	2.624 y	FP, DP
397	^22Na	22	11	11	8.306891	8.213×10^7	β^+	2.603 y	CG
398	^134Cs	134	55	79	8.719768	6.517×10^7	β^−, β^+	2.065 y	FP
399	^171Tm	171	69	102	8.417620	6.059×10^7	β^−	1.92 y
400	^228Th	228	90	138	7.953906	6.033×10^7	α	1.912 y	DP
401	^172Hf	172	72	100	8.399252	5.901×10^7	β^+	1.87 y
402	^179Ta	179	73	106	8.352703	5.743×10^7	β^+	1.82 y
403	^173Lu	173	71	102	8.400147	4.323×10^7	β^+	1.37 y
404	^252Es	252	99	153	7.764621	4.075×10^7	α, β^+, β^−	1.291 y
405	^109Cd	109	48	61	8.883327	3.986×10^7	β^+	1.263 y
406	^235Np	235	93	142	7.896669	3.422×10^7	β^+, α	1.084 y
407	^106Ru	106	44	62	8.885686	3.228×10^7	β^−	1.023 y	FP
408	^144Pm	144	61	83	8.636751	3.136×10^7	β^+	363 d
409	^145Sm	145	62	83	8.627590	2.938×10^7	β^+	340 d
410	^248Cf	248	98	150	7.800198	2.881×10^7	α, SF	333.4 d
411	^249Bk	249	97	152	7.790805	2.851×10^7	β^−, α, SF	330 d
412	^49V	49	23	26	9.050040	2.843×10^7	β^+	329.1 d
413	^54Mn	54	25	29	9.100131	2.697×10^7	β^+, β^−	312.2 d	IM
414	^119m1Sn	119	50	69		2.534×10^7	IT	293.1 d
415	^144Ce	144	58	86	8.629918	2.462×10^7	β^−	285 d	FP
416	^254Es	254	99	155	7.748524	2.382×10^7	α, β^−, SF, β^+	275.7 d
417	^57Co	57	27	30	9.112454	2.348×10^7	β^+	271.8 d	IM
418	^68Ge	68	32	36	9.056327	2.341×10^7	β^+	271 d	IM
419	^143Pm	143	61	82	8.651509	2.290×10^7	β^+	265 d
420	^110mAg	110	47	63	8.865355	2.158×10^7	β^−, IT	249.8 d
421	^65Zn	65	30	35	9.085352	2.105×10^7	β^+	243.6 d	IM
422	^153Gd	153	64	89	8.547731	2.077×10^7	β^+	240.4 d	IM
423	^102Rh	102	45	57		1.788×10^7	β^+, β^−	207 d
424	^195Au	195	79	116	8.238353	1.608×10^7	β^+	186.1 d
425	^194mIr	194	77	117	8.238025	1.477×10^7	β^−	170.9 d
426	^184mRe	184	75	109	8.310670	1.460×10^7	IT, β^+	169 d
427	^242Cm	242	96	146	7.844860	1.407×10^7	α, SF	162.8 d
428	^45Ca	45	20	25	8.978261	1.405×10^7	β^−	162.6 d
429	^177mLu	177	71	106	8.361829	1.386×10^7	β^−, IT	160.4 d
430	^121mTe	121	52	69	8.800749	1.331×10^7	IT, β^+	154.1 d
431	^159Dy	159	66	93	8.506378	1.248×10^7	β^+	144.4 d
432	^174m1Lu	174	71	103		1.227×10^7	IT, EC	142 d
433	^210Po	210	84	126	8.147295	1.196×10^7	α	138.4 d	DP
434	^139Ce	139	58	81	8.696881	1.189×10^7	β^+	137.6 d
435	^123Sn	123	50	73	8.785311	1.116×10^7	β^−	129.2 d
436	^170Tm	170	69	101	8.423096	1.111×10^7	β^−, β^+	128.6 d
437	^151Gd	151	64	87	8.562685	1.071×10^7	β^+, α	124 d
438	^181W	181	74	107	8.337924	1.047×10^7	β^+	121.2 d
439	^75Se	75	34	41	9.033581	1.035×10^7	β^+	119.8 d	IM
440	^123mTe	123	52	71		1.03×10^7	IT	119.2 d
441	^113Sn	113	50	63	8.853035	9.944×10^6	β^+	115.1 d
442	^182Ta	182	73	109	8.326456	9.887×10^6	β^−	114.4 d
443	^127mTe	127	52	75	8.765759	9.418×10^6	IT	109 d
444	^88Y	88	39	49	9.029272	9.212×10^6	β^+	106.6 d
445	^257Fm	257	100	157	7.726619	8.683×10^6	α, SF	100.5 d
446	^185Os	185	76	109	8.302730	8.087×10^6	β^+	93.6 d
447	^168Tm	168	69	99	8.436316	8.044×10^6	β^+, β^−	93.1 d
448	^149Eu	149	63	86	8.584395	8.044×10^6	β^+	93.1 d
449	^97mTc	97	43	54		7.862×10^6	IT	91 d
450	^35S	35	16	19	8.895510	7.561×10^6	β^−	87.51 d	CG
451	^83Rb	83	37	46	9.024038	7.448×10^6	β^+	86.2 d
452	^46Sc	46	21	25	8.979091	7.239×10^6	β^−	83.78 d
453	^88Zr	88	40	48	9.021589	7.206×10^6	β^+	83.4 d
454	^73As	73	33	40	9.043341	6.938×10^6	β^+	80.3 d
455	^56Co	56	27	29	9.072031	6.673×10^6	β^+	77.23 d
456	^185W	185	74	111	8.305866	6.489×10^6	β^−	75.1 d
457	^192Ir	192	77	115		6.379×10^6	β^−,ε	73.827 d	IM
458	^160Tb	160	65	95	8.495346	6.247×10^6	β^−	72.3 d
459	^58Co	58	27	31	9.103153	6.122×10^6	β^+	70.86 d
460	^183Re	183	75	108	8.321661	6.048×10^6	β^+	70 d
461	^175Hf	175	72	103	8.382665	6.048×10^6	β^+	70 d
462	^188W	188	74	114	8.277003	6.029×10^6	β^−	69.78 d
463	^85Sr	85	38	47	9.025480	5.602×10^6	β^+	64.84 d
464	^95Zr	95	40	55	8.972989	5.532×10^6	β^−	64.03 d	FP
465	^95mTc	95	43	52	8.976359	5.270×10^6	β^+, IT	61 d
466	^91mNb	91	41	50		5.258×10^6	IT,ε	60.86 d
467	^254Cf	254	98	156	7.751087	5.227×10^6	SF, α	60.5 d
468	^124Sb	124	51	73	8.777943	5.194×10^6	β^−	60.12 d
469	^125I	125	53	72	8.782019	5.132×10^6	β^+	59.4 d	IM
470	^91Y	91	39	52	9.020174	5.055×10^6	β^−	58.51 d	FP
471	^125mTe	125	52	73		4.959×10^6	IT	57.4 d
472	^148Eu	148	63	85	8.586882	4.709×10^6	β^+, α	54.5 d
473	^7Be	7	4	3	5.818470	4.598×10^6	β^+	53.22 d	CG
474	^258Md	258	101	157	7.715948	4.450×10^6	α, SF	51.5 d
475	^89Sr	89	38	51	9.039969	4.369×10^6	β^−	50.57 d	FP, IM
476	^114mIn	114	49	65	8.846608	4.278×10^6	IT, β^+	49.51 d
477	^146Gd	146	64	82	8.592512	4.171×10^6	β^+	48.28 d
478	^203Hg	203	80	123	8.195806	4.026×10^6	β^−	46.6 d
479	^237Pu	237	94	143	7.881060	3.905×10^6	β^+, α	45.2 d
480	^115mCd	115	48	67	8.835754	3.850×10^6	β^−	44.56 d
481	^59Fe	59	26	33	9.099516	3.844×10^6	β^−	44.49 d	IM
482	^181Hf	181	72	109	8.333272	3.662×10^6	β^−	42.38 d
483	^148mPm	148	61	87	8.589800	3.567×10^6	β^−, IT	41.28 d
484	^105Ag	105	47	58	8.900547	3.567×10^6	β^+	41.28 d
485	^255Es	255	99	156	7.741567	3.439×10^6	β^−, α, SF	39.8 d
486	^103Ru	103	44	59	8.918500	3.392×10^6	β^−	39.26 d	FP
487	^127Xe	127	54	73	8.766768	3.145×10^6	β^+	36.4 d
488	^184Re	184	75	109		3.059×10^6	β^+	35.4 d
489	^95Nb	95	41	54	8.984821	3.023×10^6	β^−	34.99 d	FP
490	^37Ar	37	18	19	8.907752	3.020×10^6	β^+	34.95 d	CG
491	^129mTe	129	52	77	8.744953	2.903×10^6	IT, β^−	33.6 d
492	^84Rb	84	37	47	9.020732	2.860×10^6	β^+, β^−	33.1 d
493	^241Cm	241	96	145	7.848492	2.834×10^6	β^+, α	32.8 d
494	^141Ce	141	58	83	8.677286	2.809×10^6	β^−	32.51 d	FP
495	^169Yb	169	70	99	8.428546	2.767×10^6	β^+	32.03 d	IM
496	^260Md	260	101	159	7.699789	2.748×10^6	SF, α, β^+, β^−	31.81 d
497	^51Cr	51	24	27	9.080127	2.393×10^6	β^+	27.7 d	IM
498	^240Cm	240	96	144	7.855805	2.333×10^6	α, β^+, SF	27 d
499	^233Pa	233	91	142	7.910426	2.331×10^6	β^−	26.98 d
500	^82Sr	82	38	44	8.998254	2.208×10^6	β^+	25.56 d	IM
501	^33P	33	15	18	8.869434	2.189×10^6	β^−	25.34 d
502	^179m2Hf	179	72	107		2.164×10^6	IT	25.05 d
503	^234Th	234	90	144	7.897763	2.082×10^6	β^−	24.1 d	DP
504	^147Eu	147	63	84	8.598879	2.082×10^6	β^+, α	24.1 d
505	^178W	178	74	104	8.354563	1.866×10^6	β^+	21.6 d
506	^230U	230	92	138	7.933871	1.797×10^6	α, SF	20.8 d
507	^253Es	253	99	154	7.759019	1.769×10^6	α, SF	20.5 d
508	^121Te	121	52	69		1.656×10^6	ε	19.2 d
509	^227Th	227	90	137	7.957644	1.614×10^6	α	18.7 d	DP
510	^86Rb	86	37	49	9.033502	1.611×10^6	β^−, β^+	18.6 d
511	^253Cf	253	98	155	7.757885	1.539×10^6	β^−, α	17.8 d
512	^74As	74	33	41	9.028895	1.535×10^6	β^+, β^−	17.8 d
513	^230Pa	230	91	139	7.931436	1.503×10^6	β^+, β^−, α	17.4 d
514	^103Pd	103	46	57	8.920638	1.468×10^6	β^+	17.0 d	IM
515	^99Rh	99	45	54	8.935711	1.391×10^6	β^+	16.1 d
516	^48V	48	23	25	8.997890	1.380×10^6	β^+	15.97 d
517	^191Os	191	76	115	8.261870	1.331×10^6	β^−	15.41 d
518	^205Bi	205	83	122	8.174069	1.323×10^6	β^+	15.31 d
519	^156Eu	156	63	93	8.520642	1.312×10^6	β^−	15.19 d
520	^225Ra	225	88	137	7.973576	1.287×10^6	β^−	14.9 d
521	^32P	32	15	17	8.830865	1.232×10^6	β^−	14.26 d	CG, IM
522	^117mSn	117	50	67		1.21×10^6	IT	14 d
523	^143Pr	143	59	84	8.652258	1.172×10^6	β^−	13.56 d
524	^189Ir	189	77	112	8.274783	1.140×10^6	β^+	13.19 d
525	^136Cs	136	55	81	8.706171	1.127×10^6	β^−	13.04 d
526	^126I	126	53	73	8.769026	1.117×10^6	β^+, β^−	12.93 d
527	^140Ba	140	56	84	8.666120	1.102×10^6	β^−	12.75 d	FP
528	^126Sb	126	51	75	8.757042	1.067×10^6	β^−	12.35 d
529	^202Tl	202	81	121	8.199956	1.057×10^6	β^+	12.23 d
530	^131mXe	131	54	77		1.023×10^6	IT	11.84 d
531	^190Ir	190	77	113	8.264755	1.018×10^6	β^+	11.78 d
532	^131Ba	131	56	75	8.733037	9.936×10^5	β^+	11.5 d
533	^223Ra	223	88	135	7.994042	9.876×10^5	α	11.43 d	DP, IM
534	^71Ge	71	32	39	9.055943	9.876×10^5	β^+	11.43 d
535	^147Nd	147	60	87	8.602973	9.487×10^5	β^−	10.98 d
536	^246Pu	246	94	152	7.805494	9.366×10^5	β^−	10.84 d
537	^193mIr	193	77	116		9.098×10^5	IT	10.53 d
538	^188Pt	188	78	110	8.272514	8.813×10^5	β^+, α	10.2 d
539	^92mNb	92	41	51		8.770×10^5	β^+, α	10.15 d
540	^225Ac	225	89	136	7.975159	8.571×10^5	α	9.92 d	DP
541	^131Cs	131	55	76	8.743541	8.371×10^5	β^+	9.69 d	IM
542	^125Sn	125	50	75	8.758515	8.329×10^5	β^−	9.64 d
543	^169Er	169	68	101	8.431852	8.115×10^5	β^−	9.39 d	IM
544	^149Gd	149	64	85	8.575576	8.018×10^5	β^+, α	9.28 d
545	^167Tm	167	69	98	8.445866	7.992×10^5	β^+	9.25 d
546	^129mXe	129	54	75		7.672×10^5	IT	8.88 d
547	^206Po	206	84	122	8.159590	7.603×10^5	β^+, α	8.80 d
548	^72Se	72	34	38	9.014300	7.258×10^5	β^+	8.40 d
549	^106mAg	106	47	59	8.890639	7.154×10^5	β^+	8.28 d
550	^171Lu	171	71	100	8.409532	7.119×10^5	β^+	8.24 d
551	^131I	131	53	78	8.738842	6.930×10^5	β^−	8.02 d	FP, IM
552	^257Es	257	99	158	7.723468	6.653×10^5	β^−, SF	7.7 d
553	^111Ag	111	47	64	8.866111	6.437×10^5	β^−	7.45 d
554	^161Tb	161	65	96	8.490383	5.967×10^5	β^−	6.91 d
555	^237U	237	92	145	7.879800	5.832×10^5	β^−	6.75 d
556	^172Lu	172	71	101	8.401217	5.789×10^5	β^+	6.70 d	IM
557	^177Lu	177	71	106		5.743×10^5	β^−	6.65 d
558	^132Cs	132	55	77	8.731599	5.599×10^5	β^+, β^−	6.48 d
559	^206Bi	206	83	123	8.168551	5.394×10^5	β^+	6.24 d
560	^196Au	196	79	117	8.230205	5.328×10^5	β^+, β^−	5.17 d
561	^56Ni	56	28	28	9.033899	5.249×10^5	β^+	6.08 d
562	^118Te	118	52	66	8.814726	5.184×10^5	β^+	6 d
563	^145Eu	145	63	82	8.609245	5.124×10^5	β^+	5.93 d
564	^120mSb	120	51	69	8.808194	4.977×10^5	β^+	5.76 d
565	^52Mn	52	25	27	9.046431	4.831×10^5	β^+	5.59 d
566	^148Pm	148	61	87		4.638×10^5	β^−	5.37 d
567	^156Tb	156	65	91	8.520667	4.622×10^5	β^+	5.35 d
568	^155Tb	155	65	90	8.531031	4.596×10^5	β^+	5.32 d
569	^133Xe	133	54	79	8.730302	4.530×10^5	β^−	5.24 d	IM
570	^183Ta	183	73	110	8.318847	4.406×10^5	β^−	5.10 d
571	^210Bi	210	83	127		4.330×10^5	β^−, α	5.01 d	DP
572	^245Bk	245	97	148	7.819020	4.268×10^5	β^+, α	4.94 d
573	^119mTe	119	52	67	8.801773	4.061×10^5	β^+, IT	4.7 d
574	^146Eu	146	63	83	8.599560	3.983×10^5	β^+	4.61 d
575	^47Ca	47	20	27	8.972181	3.919×10^5	β^−	4.54 d
576	^234Np	234	93	141	7.900571	3.802×10^5	β^+	4.4 d
577	^101mRh	101	45	56		3.74×10^5	ε, IT	4.34 d
578	^193mPt	193	78	115		3.74×10^5	IT	4.33 d
579	^96Tc	96	43	53	8.965255	3.698×10^5	β^+	4.28 d
580	^231U	231	92	139	7.924977	3.629×10^5	β^+, α	4.2 d
581	^175Yb	175	70	105	8.383902	3.616×10^5	β^−	4.19 d
582	^124I	124	53	71	8.775884	3.608×10^5	β^+	4.18 d	IM
583	^195mPt	195	78	117		3.46×10^5	IT	4.01 d
584	^127Sb	127	51	76	8.754005	3.326×10^5	β^−	3.85 d
585	^222Rn	222	86	136	7.997573	3.304×10^5	α	3.82 d	DP
586	^186Re	186	75	111		3.21×10^5	β−,e	3.72 d	IM
587	^224Ra	224	88	136	7.987277	3.138×10^5	α	3.63 d	DP
588	^100Pd	100	46	54	8.923587	3.136×10^5	β^+	3.63 d
589	^95mNb	95	41	54		3.11×10^5	IT, β−	3.61 d
590	^166Dy	166	66	100	8.448376	2.938×10^5	β^−	3.4 d
591	^140Nd	140	60	80	8.673113	2.912×10^5	β^+	3.37 d
592	^47Sc	47	21	26	9.014564	2.894×10^5	β^−	3.35 d
593	^87Y	87	39	48	9.025565	2.873×10^5	β^+	3.33 d
594	^89Zr	89	40	49	9.024912	2.823×10^5	β^+	3.27 d
595	^67Ga	67	31	36	9.069532	2.819×10^5	β^+	3.26 d	IM
596	^132Te	132	52	80	8.716646	2.768×10^5	β^−	3.2 d	FP
597	^134Ce	134	58	76	8.704432	2.730×10^5	β^+	3.16 d
598	^199Au	199	79	120	8.217534	2.712×10^5	β^−	3.14 d
599	^201Tl	201	81	120	8.206561	2.625×10^5	β^+	3.04 d	IM
600	^253Fm	253	100	153	7.757691	2.592×10^5	β^+, α	3. d
601	^191Pt	191	78	113	8.258228	2.473×10^5	β^+	2.86 d
602	^111In	111	49	62	8.867688	2.423×10^5	β^+	2.8 d	IM
603	^97Ru	97	44	53	8.959080	2.411×10^5	β^+	2.79 d
604	^99Mo	99	42	57	8.939669	2.375×10^5	β^−	2.75 d	FP, IM
605	^122Sb	122	51	71	8.795346	2.353×10^5	β^−, β^+	2.72 d
606	^71As	71	33	38	9.027581	2.350×10^5	β^+	2.72 d
607	^198Au	198	79	119	8.220732	2.329×10^5	β^−	2.7 d	IM
608	^197Hg	197	80	117	8.226358	2.309×10^5	β^+	2.67 d
609	^90Y	90	39	51	9.032294	2.306×10^5	β^−	2.67 d	IM
610	^182Re	182	75	107	8.321053	2.304×10^5	β^+	2.67 d
611	^172Tm	172	69	103	8.404932	2.290×10^5	β^−	2.65 d
612	^67Cu	67	29	38	9.076086	2.226×10^5	β^−	2.58 d	IM
613	^44mSc	44	21	23	8.924627	2.110×10^5	IT, β^+	2.44 d
614	^128Ba	128	56	72	8.738523	2.100×10^5	β^+	2.43 d
615	^77Br	77	35	42	9.022431	2.053×10^5	β^+	2.38 d
616	^166Yb	166	70	96	8.442340	2.041×10^5	β^+	2.36 d
617	^177Ta	177	73	104	8.363553	2.036×10^5	β^+	2.36 d
618	^239Np	239	93	146	7.864999	2.036×10^5	β^−	2.36 d	DP
619	^153Tb	153	65	88	8.537471	2.022×10^5	β^+	2.34 d
620	^66Ni	66	28	38	9.071423	1.966×10^5	β^−	2.28 d
621	^247Pu	247	94	153	7.791975	1.961×10^5	β^−	2.27 d
622	^198m2Au	198	79	119		1.96×10^5	IT	2.27 d
623	^115Cd	115	48	67		1.92×10^5	β−	2.23 d
624	^149Pm	149	61	88	8.581871	1.911×10^5	β^−	2.21 d
625	^133mXe	133	54	79		1.89×10^5	IT	2.20 d
626	^203Pb	203	82	121	8.193431	1.869×10^5	β^+	2.16 d
627	^238Np	238	93	145	7.871931	1.829×10^5	β^−	2.12 d
628	^240Am	240	95	145	7.856694	1.829×10^5	β^+, α	2.12 d
629	^172Er	172	68	104	8.399752	1.775×10^5	β^−	2.05 d
630	^170Lu	170	71	99	8.408445	1.738×10^5	β^+	2.01 d
631	^72Zn	72	30	42	9.017591	1.674×10^5	β^−	1.94 d
632	^153Sm	153	62	91	8.545614	1.666×10^5	β^−	1.93 d	IM
633	^202Pt	202	78	124	8.183209	1.584×10^5	β^−	1.83 d
634	^48Sc	48	21	27	8.998327	1.572×10^5	β^−	1.82 d
635	^246Bk	246	97	149	7.811287	1.555×10^5	β^+, α	1.8 d
636	^195mHg	195	80	115	8.229399	1.498×10^5	IT, β^+	1.73 d
637	^188Ir	188	77	111	8.275200	1.494×10^5	β^+	1.73 d
638	^140La	140	57	83	8.673620	1.450×10^5	β^−	1.68 d
639	^254mEs	254	99	155		1.41×10^5	β−, IT, α, EC, SF	1.64 d
640	^69Ge	69	32	37	9.043800	1.406×10^5	β^+	1.63 d
641	^133mBa	133	56	77		1.4×10^5	IT,e	1.62 d
642	^77As	77	33	44	9.031283	1.398×10^5	β^−	1.62 d
643	^119Sb	119	51	68	8.823235	1.375×10^5	β^+	1.59 d
644	^147Gd	147	64	83	8.584001	1.370×10^5	β^+	1.59 d
645	^194Au	194	79	115	8.237626	1.369×10^5	β^+	1.58 d
646	^229Pa	229	91	138	7.940769	1.296×10^5	β^+, α	1.5 d
647	^246Cf	246	98	148	7.810792	1.285×10^5	α, β^+, SF	1.49 d
648	^57Ni	57	28	29	9.055222	1.282×10^5	β^+	1.48 d
649	^105Rh	105	45	60	8.907956	1.273×10^5	β^−	1.47 d	FP
650	^82Br	82	35	47	9.016407	1.270×10^5	β^−	1.47 d
651	^79Kr	79	36	43	9.013644	1.261×10^5	β^+	1.46 d
652	^137mCe	137	58	79	8.696327	1.238×10^5	IT, β^+	1.43 d
653	^169Lu	169	71	98	8.414978	1.226×10^5	β^+	1.42 d
654	^143Ce	143	58	85	8.642041	1.189×10^5	β^−	1.38 d
655	^251Es	251	99	152	7.774467	1.188×10^5	β^+, α	1.38 d
656	^83Sr	83	38	45	8.996568	1.167×10^5	β^+	1.35 d
657	^129Cs	129	55	74	8.749622	1.154×10^5	β^+	1.34 d
658	^268Db	268	105	163	7.635133	1.152×10^5	SF, EC	1.33 d
659	^232Pa	232	91	141	7.916379	1.132×10^5	β^−, β^+	1.31 d
660	^193Os	193	76	117	8.244348	1.084×10^5	β^−	1.25 d
661	^165Tm	165	69	96	8.452758	1.082×10^5	β^+	1.25 d
662	^131mTe	131	52	79	8.720392	1.080×10^5	β^−, IT	1.25 d
663	^226Ac	226	89	137	7.963761	1.057×10^5	β^−, β^+, α	1.22 d
664	^160Er	160	68	92	8.484190	1.029×10^5	β^+	1.19 d
665	^151Pm	151	61	90	8.557387	1.022×10^5	β^−	1.18 d
666	^135mBa	135	56	79		1.01×10^5	IT	1.17 d
667	^121Sn	121	50	71		9.73×10^4	β−	1.13 d
668	^166Ho	166	67	99		9.65×10^4	β−	1.12 d	IM
669	^76As	76	33	43	9.022505	9.454×10^4	β^−	1.09 d
670	^200Tl	200	81	119	8.206567	9.396×10^4	β^+	1.09 d
671	^72As	72	33	39	9.018966	9.360×10^4	β^+	1.08 d
672	^231Th	231	90	141	7.924932	9.187×10^4	β^−, α	1.06 d	DP
673	^252Fm	252	100	152	7.766498	9.140×10^4	α, SF	1.06 d
674	^252Cm	252	96	156	7.757439	8.99×10^4	β^−	[5]1.04 d
675	^156mTb	156	65	91		8.78×10^4	IT	1.02 d
676	^189Re	189	75	114	8.272269	8.748×10^4	β^−	1.01 d

Radionuclides with half-lives of 1.0 hour to 24 hours

no	nuclide	energy	half-life (s)	decay mode
641	^187W	8.284722	8.539×10^4	β^−
642	^173Hf	8.391617	8.496×10^4	β^+
643	^96Nb	8.963036	8.406×10^4	β^−
644	^154mTb	8.526912	8.172×10^4	β^+, IT
645	^43K	8.922327	8.028×10^4	β^−
646	^182Os	8.316432	7.956×10^4	β^+
647	^228Pa	7.944468	7.920×10^4	β^+, α
648	^48Cr	8.963390	7.762×10^4	β^+
649	^200Pb	8.202542	7.740×10^4	β^+
650	^112Pd	8.842185	7.571×10^4	β^−
651	^28Mg	8.607706	7.529×10^4	β^−
652	^100Rh	8.927167	7.488×10^4	β^+
653	^133I	8.717094	7.488×10^4	β^−
654	^122Xe	8.770959	7.236×10^4	β^+
655	^255Fm	7.742704	7.225×10^4	α, SF
656	^181Re	8.328294	7.164×10^4	β^+
657	^197Pt	8.225756	7.161×10^4	β^−
658	^135La	8.713179	7.020×10^4	β^+
659	^142Pr	8.661417	6.883×10^4	β^−, β^+
660	^200mAu	8.202877	6.732×10^4	β^−, IT
661	^159Gd	8.502576	6.652×10^4	β^−
662	^135Ce	8.698179	6.372×10^4	β^+
663	^193Au	8.244353	6.354×10^4	β^+
664	^151Tb	8.545692	6.339×10^4	β^+, α
665	^55Co	9.053647	6.311×10^4	β^+
666	^152Tb	8.536591	6.300×10^4	β^+, α
667	^188Re	8.278860	6.121×10^4	β^−
668	^125Xe	8.768864	6.084×10^4	β^+
669	^97Zr	8.926451	6.028×10^4	β^−
670	^186Ir	8.281935	5.990×10^4	β^+
671	^86Zr	8.975979	5.940×10^4	β^+
672	^76Br	8.996183	5.832×10^4	β^+
673	^170Hf	8.402210	5.764×10^4	β^+
674	^157Eu	8.513792	5.465×10^4	β^−
675	^24Na	8.422082	5.382×10^4	β^−
676	^76Kr	8.979406	5.328×10^4	β^+
677	^86Y	8.993234	5.306×10^4	β^+
678	^211Rn	8.112825	5.256×10^4	β^+, α
679	^90Nb	8.989727	5.256×10^4	β^+
680	^185Ir	8.289382	5.184×10^4	β^+
681	^240U	7.851682	5.076×10^4	β^−
682	^72Ga	9.023958	5.074×10^4	β^−
683	^69mZn	9.056536	4.954×10^4	IT, β^−
684	^109Pd	8.875061	4.932×10^4	β^−
685	^123I	8.786311	4.760×10^4	β^+
686	^265Rf	7.661139	≈ 4.680×10^4	α
687	^183Os	8.309907	4.680×10^4	β^+
688	^64Cu	9.093581	4.572×10^4	β^+, β^−
689	^200Pt	8.204342	4.500×10^4	β^−
690	^130I	8.740035	4.450×10^4	β^−
691	^42K	8.905175	4.436×10^4	β^−
692	^171Hf	8.395480	4.356×10^4	β^+
693	^239Am	7.864666	4.284×10^4	β^+, α
694	^193mHg	8.231483	4.248×10^4	β^+, IT
695	^203Bi	8.177436	4.234×10^4	β^+
696	^77Ge	8.996185	4.068×10^4	β^−
697	^204Bi	8.172651	4.039×10^4	β^+
698	^266Lr		3.960×10^4	SF
699	^189Pt	8.264359	3.913×10^4	β^+
700	^212Pb	8.106928	3.830×10^4	β^−
701	^175Ta	8.370813	3.780×10^4	β^+
702	^245Pu	7.813752	3.780×10^4	β^−
703	^187Ir	8.283713	3.780×10^4	β^+
704	^165Er	8.462406	3.730×10^4	β^+
705	^93Y	8.976951	3.665×10^4	β^−
706	^244Am	7.825914	3.636×10^4	β^−
707	^266Rf	7.658170	≈ 3.600×10^4	α, SF
708	^155Dy	8.517521	3.564×10^4	β^+
709	^91Sr	8.990503	3.467×10^4	β^−
710	^66Ga	9.036843	3.416×10^4	β^+
711	^156Sm	8.516007	3.384×10^4	β^−
712	^201Pb	8.196989	3.359×10^4	β^+
713	^62Zn	9.057957	3.307×10^4	β^+
714	^135Xe	8.711453	3.290×10^4	β^−
715	^128Sb	8.732343	3.244×10^4	β^−
716	^234Pu	7.898892	3.168×10^4	β^+, α
717	^184Ta	8.304154	3.132×10^4	β^−
718	^250Es	7.778407	3.096×10^4	β^+, α
719	^101Pd	8.917149	3.049×10^4	β^+
720	^52Fe	9.000789	2.979×10^4	β^+
721	^173Tm	8.396524	2.966×10^4	β^−
722	^157Dy	8.513544	2.930×10^4	β^+
723	^210At	8.128337	2.916×10^4	β^+, α
724	^176Ta	8.363202	2.912×10^4	β^+
725	^166Tm	8.444183	2.772×10^4	β^+
726	^256mEs	7.730742	2.736×10^4	β^−
727	^171Er	8.408901	2.706×10^4	β^−
728	^199Tl	8.212333	2.671×10^4	β^+
729	^211At	8.126527	2.597×10^4	β^+, α
730	^73Se	9.005821	2.574×10^4	β^+
731	^234Pa	7.898930	2.412×10^4	β^−
732	^135I	8.691994	2.365×10^4	β^−
733	^107Cd	8.884271	2.340×10^4	β^+
734	^82mRb	8.999608	2.330×10^4	β^+, IT
735	^153Dy	8.523288	2.304×10^4	β^+, α
736	^127Cs	8.750383	2.250×10^4	β^+
737	^228Ac	7.944591	2.214×10^4	β^−
738	^145Pr	8.620514	2.154×10^4	β^−
739	^207Po	8.154158	2.088×10^4	β^+, α
740	^90Mo	8.962072	2.002×10^4	β^+
741	^257Md	7.725040	1.987×10^4	β^+, α, SF
742	^111mPd	8.844589	1.980×10^4	IT, β^−
743	^139mNd	8.659529	1.980×10^4	β^+, IT
744	^209At	8.132954	1.948×10^4	β^+, α
745	^113Ag	8.841531	1.933×10^4	β^−
746	^198Tl	8.210166	1.908×10^4	β^+
747	^251Fm	7.768590	1.908×10^4	β^+, α
748	^138Nd	8.665661	1.814×10^4	β^+
749	^160mHo	8.485877	1.807×10^4	IT, β^+
750	^118mSb	8.814963	1.800×10^4	β^+
751	^243Pu	7.833648	1.784×10^4	β^−
752	^192Au	8.242036	1.778×10^4	β^+
753	^110In	8.857464	1.764×10^4	β^+
754	^133mCe	8.690771	1.764×10^4	β^+
755	^94Tc	8.966583	1.758×10^4	β^+
756	^85mY	8.986880	1.750×10^4	β^+, IT
757	^73Ga	9.026112	1.750×10^4	β^−
758	^192Hg	8.238051	1.746×10^4	β^+
759	^132La	8.705721	1.728×10^4	β^+
760	^179Lu	8.345428	1.652×10^4	β^−
761	^81Rb	9.002871	1.645×10^4	β^+
762	^243Bk	7.829801	1.620×10^4	β^+, α
763	^105Ru	8.889689	1.598×10^4	β^−
764	^80mBr	9.018872	1.591×10^4	IT
765	^139Pr	8.681565	1.588×10^4	β^+
766	^129Sb	8.727358	1.584×10^4	β^−
767	^244Bk	7.822491	1.566×10^4	β^+, α
768	^109In	8.864805	1.512×10^4	β^+
769	^184Hf	8.296871	1.483×10^4	β^−
770	^149Tb	8.551166	1.482×10^4	β^+, α
771	^110Sn	8.851727	1.480×10^4	β^+
772	^262Lr	7.681556	1.440×10^4	SF, β^+, α
773	^71mZn	9.017370	1.426×10^4	β^−, IT
774	^141La	8.659540	1.411×10^4	β^−
775	^133La	8.714109	1.408×10^4	β^+
776	^43Sc	8.912907	1.401×10^4	β^+
777	^195mIr	8.233326	1.368×10^4	β^−, IT
778	^92Y	8.993208	1.274×10^4	β^−
779	^204Po	8.161200	1.271×10^4	β^+, α
780	^132Ce	8.696131	1.264×10^4	β^+
781	^150Tb	8.545394	1.253×10^4	β^+, α
782	^117mCd	8.808840	1.210×10^4	β^−
783	^61Cu	9.087452	1.200×10^4	β^+
784	^209Pb	8.155607	1.171×10^4	β^−
785	^254Fm	7.752808	1.166×10^4	α, SF
786	^250Bk	7.779523	1.156×10^4	β^−
787	^161Er	8.476352	1.156×10^4	β^+
788	^190mRe	8.257433	1.152×10^4	β^−, IT
789	^191Au	8.248343	1.145×10^4	β^+
790	^173Ta	8.374218	1.130×10^4	β^+
791	^112Ag	8.844756	1.127×10^4	β^−
792	^247Cf	7.803566	1.120×10^4	β^+, α
793	^184Ir	8.286599	1.112×10^4	β^+
794	^45Ti	8.938121	1.109×10^4	β^+
795	^167Ho	8.444304	1.081×10^4	β^−
796	^269Db	7.630064	1.080×10^4	α, SF
797	^239Cm	7.857143	1.044×10^4	β^+, α
798	^197Tl	8.215190	1.022×10^4	β^+
799	^88Kr	8.976918	1.022×10^4	β^−
800	^38S	8.778196	1.022×10^4	β^−
801	^117Sb	8.828977	1.008×10^4	β^+
802	^224Ac	7.980993	1.001×10^4	β^+, α, β^−
803	^93Tc	8.970274	9.900×10^3	β^+
804	^150Pm	8.562014	9.648×10^3	β^−
805	^92Sr	8.972067	9.576×10^3	β^−
806	^256Fm	7.737398	9.456×10^3	SF, α
807	^31Si	8.811618	9.438×10^3	β^−
808	^56Mn	9.087572	9.284×10^3	β^−
809	^65Ni	9.073267	9.062×10^3	β^−
810	^176W	8.359055	9.000×10^3	β^+
811	^116Te	8.806414	8.964×10^3	β^+
812	^141Nd	8.668476	8.964×10^3	β^+
813	^161Ho	8.488737	8.928×10^3	β^+
814	^210Rn	8.117032	8.640×10^3	α, β^+
815	^198Pb	8.202893	8.640×10^3	β^+
816	^238Cm	7.863764	8.640×10^3	β^+, α
817	^83Br	9.023243	8.640×10^3	β^−
818	^152Dy	8.532670	8.568×10^3	β^+, α
819	^178mTa	8.355075	8.496×10^3	β^+
820	^187Pt	8.267638	8.460×10^3	β^+
821	^165Dy	8.456891	8.402×10^3	β^−
822	^267Rf	7.647357	8.280×10^3	SF
823	^132I	8.720570	8.262×10^3	β^−
824	^158Er	8.484619	8.244×10^3	β^+
825	^66Ge	9.004964	8.136×10^3	β^+
826	^129Ba	8.730746	8.028×10^3	β^+
827	^177W	8.352118	7.920×10^3	β^+
828	^106mRh	8.884761	7.860×10^3	β^−
829	^138mPr	8.671088	7.632×10^3	β^+
830	^121I	8.784443	7.632×10^3	β^+
831	^127Sn	8.728800	7.560×10^3	β^−
832	^123Xe	8.764409	7.488×10^3	β^+
833	^186Pt	8.274897	7.488×10^3	β^+, α
834	^245Am	7.818674	7.380×10^3	β^−
835	^89Nb	8.977507	7.308×10^3	β^+
836	^117mIn	8.828849	6.972×10^3	β^−, IT
837	^177Yb	8.359401	6.880×10^3	β^−
838	^196Tl	8.211618	6.624×10^3	β^+
839	^18F	8.022789	6.585×10^3	β^+
840	^41Ar	8.877852	6.577×10^3	β^−
841	^163Tm	8.456205	6.516×10^3	β^+
842	^239Pa	7.848148	6.480×10^3	β^−
843	^201Bi	8.177875	6.480×10^3	β^+, α
844	^207At	8.135303	6.480×10^3	β^+, α
845	^224Rn	7.971327	6.420×10^3	β^−
846	^80Sr	8.950177	6.378×10^3	β^+
847	^181Os	8.311935	6.300×10^3	β^+
848	^205Po	8.156737	6.264×10^3	β^+, α
849	^149Nd	8.570529	6.221×10^3	β^−
850	^202Bi	8.173966	6.192×10^3	β^+, α
851	^249Es	7.785464	6.132×10^3	β^+, α
852	^147Tb	8.552634	6.120×10^3	β^+
853	^87Zr	8.983373	6.048×10^3	β^+
854	^126Ba	8.727439	6.000×10^3	β^+
855	^61Co	9.102449	5.940×10^3	β^−
856	^95Ru	8.949749	5.915×10^3	β^+
857	^238Am	7.867882	5.880×10^3	β^+, α
858	^208At	8.131376	5.868×10^3	β^+, α
859	^75Br	8.993181	5.802×10^3	β^+
860	^259Md	7.709860	5.760×10^3	SF, α
861	^230Ra	7.921249	5.580×10^3	β^−
862	^142La	8.634954	5.466×10^3	β^−
863	^78As	9.004879	5.442×10^3	β^−
864	^199Pb	8.198111	5.400×10^3	β^+
865	^78Ge	8.992635	5.280×10^3	β^−
866	^255Cf	7.738739	5.100×10^3	β^−
867	^196mIr	8.219440	5.040×10^3	β^−, IT
868	^139Ba	8.682217	4.984×10^3	β^−
869	^75Ge	9.029413	4.967×10^3	β^−
870	^120I	8.769577	4.896×10^3	β^+
871	^256Md	7.729062	4.620×10^3	β^+, α, SF
872	^137Pr	8.678459	4.608×10^3	β^+
873	^87Kr	8.999022	4.578×10^3	β^−
874	^164Yb	8.443419	4.548×10^3	β^+
875	^163Er	8.471168	4.500×10^3	β^+
876	^77Kr	8.982618	4.464×10^3	β^+
877	^178Yb	8.350530	4.440×10^3	β^−
878	^267Db	7.644361	4.380×10^3	SF
879	^237Am	7.874830	4.380×10^3	β^+, α
880	^142Sm	8.627616	4.349×10^3	β^+
881	^97Nb	8.953864	4.326×10^3	β^−
882	^185Pt	8.269598	4.254×10^3	β^+
883	^195Tl	8.215712	4.176×10^3	β^+
884	^104Ag	8.889702	4.152×10^3	β^+
885	^174Ta	8.368684	4.104×10^3	β^+
886	^68Ga	9.057888	4.063×10^3	β^+
887	^162mHo	8.478371	4.020×10^3	IT, β^+
888	^103Ag	8.894541	3.942×10^3	β^+
889	^249Cm	7.787191	3.849×10^3	β^−
890	^183Hf	8.307885	3.841×10^3	β^−
891	^229Ac	7.937048	3.762×10^3	β^−
892	^117Te	8.798652	3.720×10^3	β^+
893	^240Np	7.853348	3.714×10^3	β^−
894	^212Bi	8.109617	3.633×10^3	β^−, α
895	^116mSb	8.816483	3.618×10^3	β^+
896	^148Tb	8.547949	3.600×10^3	β^+

Naturally occurring isotopes with half-lives below one hour

nuclide	half-life (s)	decay mode
^211Pb	36.1 min	β^−
^214Pb	26.8 min	β^−
^223Fr	22 min	β^−, α
^214Bi	19.9 min	β^−, α
^206Hg	8.15 min	β^−
^215Bi	7.6 min	β^−
^221Fr	4.8 min	α
^207Tl	4.77 min	β^−
^206Tl	4.2 min	β^−
^218Po	3.10 min	α, β^−
^208Tl	3.053 min	β^−
^211Bi	2.14 min	α, β^−
^210Tl	1.3 min	β^−
^234mPa	1.17 min	β^−, I
^219At	56 s	α, β^−
^220Rn	55.6 s	α
^285Cn	29 s	α
^219Rn	3.96 s	α
^218At	1.5 s	α, β^−
^211Po	0.516 s	α
^216Po	0.145 s	α
^218Rn	35 ms	α
^215Po	1.781 ms	α
^214Po	164.3 µs	α
^215At	0.1 ms	α
^212Po	299 ns	α

See also

• Primordial nuclide
• Table of nuclides
• Isotope geochemistry
• Radionuclide
• Mononuclidic element
• Monoisotopic element
• Stable isotope
• List of elements by stability of isotopes
• List of radioactive isotopes by half-life

Sources

Almost all data are taken from reference.^[6] For more recent updates, see reference.^[7] These sources do not indicate whether certain heavy isotopes starting from Lr, Rf, Db... (etc.) were produced, observed, or only predicted from estimated data.

References

1. Table data is derived by counting members of the list; see WP:CALC. References for the list data itself are given below in this reference section
2. primarily sourced fro http://world-nuclear.org/information-library/non-power-nuclear-applications/radioisotopes-research/radioisotopes-in-medicine.aspx and http://world-nuclear.org/information-library/non-power-nuclear-applications/radioisotopes-research/radioisotopes-in-industry.aspx accessed 30 June 2016
3. Other sources give the half-life of ¹⁴C as 5730 years (=1.808×10¹¹ seconds)
4. Boutin, Chad. "Polonium's Most Stable Isotope Gets Revised Half-Life Measurement". nist.gov. NIST Tech Beat. Retrieved 9 September 2014.
5. half life poorly determined, main authorities (NUDAT 2.6, NUBASE 2012) merely state <2 days. Figure is from http://periodictable.com/Isotopes/096.252/index2.html accessed 1 July 2016
6. Jagdish K. Tuli, Nuclear Wallet Cards, 7th edition, April 2005, Brookhaven National Laboratory, US National Nuclear Data Center
7. Interactive Chart of Nuclides (Brookhaven National Laboratory)

External links

• Experimental atomic mass data compiled Nov. 2003
• J. Magill, G. Pfennig, J. Galy "Karlsruher Nuclide Chart", 7th edition 2006, revised printing Nov. 2007
• IAEA app for mobiles: Android or Apple - for PC use The Live Chart of Nuclides - IAEA with dynamic half-life filtering
• Nice Overview picture for energy of nuclides
• National Isotope Development Center Reference information on isotopes, and coordination and management of isotope production, availability, and distribution
• Isotope Development & Production for Research and Applications (IDPRA) U.S. Department of Energy program for isotope production and production research and development