List of nuclides

This list of nuclides shows observed nuclides that either are stable or, if radioactive, have half-lives longer than one hour. At least 3,300 nuclides have been experimentally characterized.
A nuclide is defined conventionally as an experimentally examined bound collection of protons and neutrons that either is stable or has an observed decay mode.

Introduction

252 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 252 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. 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. There are 34 of these, of which 24 have half-lives longer than 100 trillion years. With most of these 24, decay is difficult to observe and for most purposes they can be regarded as effectively stable. Bismuth-209 is notable as the only naturally occurring isotope of an element long considered stable. A further 10 nuclides, platinum-190, samarium-147, lanthanum-138, rubidium-87, rhenium-187, lutetium-176, thorium-232, uranium-238, potassium-40, and uranium-235 have half-lives between 700 million and 1 trillion years, which means they have experienced significant depletion 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 heating and radioactive decay products. Together, there are a total of 286 primordial nuclides.
The list then covers the ~700 radionuclides with half-lives longer than 1 hour, split into two tables, half-lives greater than one day and less than one day. 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, such as radon-222. Others are the products of interactions with energetic cosmic-rays 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.
Further shorter-lived nuclides have been detected in the spectra of stars. 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 releases of man-made nuclear fission product. Other are produced artificially for industrial or medical purposes.

List legend

Each group of radionuclides, starting with the longest-lived primordial radionuclides, is sorted by decreasing half-life, but the tables are sortable by other columns.

Full list

Theoretically stable nuclides

no	nuclide	A	Z	N	energy
1	⁵⁶Fe	56	26	30
2	⁶²Ni	62	28	34
3	⁶⁰Ni	60	28	32
4	⁵⁸Fe	58	26	32
5	⁵²Cr	52	24	28
6	⁵⁷Fe	57	26	31
7	⁵⁹Co	59	27	32
8	⁵⁴Cr	54	24	30
9	⁶¹Ni	61	28	33
10	⁵⁵Mn	55	25	30
11	⁶⁴Ni	64	28	36
12	⁶⁶Zn	66	30	36
13	⁵³Cr	53	24	29
14	⁶³Cu	63	29	34
15	⁶⁵Cu	65	29	36
16	⁶⁸Zn	68	30	38
17	⁵⁰Ti	50	22	28
18	⁵¹V	51	23	28
19	⁶⁷Zn	67	30	37
20	⁴⁸Ti	48	22	26
21	⁷²Ge	72	32	40
22	⁷⁰Ge	70	32	38
23	⁶⁹Ga	69	31	38
24	⁸⁸Sr	88	38	50
25	⁷⁴Ge	74	32	42
26	⁴⁹Ti	49	22	27
27	⁷⁶Se	76	34	42
28	⁷¹Ga	71	31	40
29	⁷⁸Se	78	34	44
30	⁹⁰Zr	90	40	50
31	⁸⁹Y	89	39	50
32	⁸⁶Sr	86	38	48
33	⁸²Kr	82	36	46
34	⁸⁴Kr	84	36	48
35	⁷³Ge	73	32	41
36	⁸⁷Sr	87	38	49
37	⁷⁵As	75	33	42
38	⁸⁰Kr	80	36	44
39	⁷⁷Se	77	34	43
40	⁸⁵Rb	85	37	48
41	⁹¹Zr	91	40	51
42	⁸³Kr	83	36	47
43	⁷⁹Br	79	35	44
44	⁸¹Br	81	35	46
45	⁹²Zr	92	40	52
46	⁴⁶Ti	46	22	24
47	⁴⁷Ti	47	22	25
48	⁴⁴Ca	44	20	24
49	⁴²Ca	42	20	22
50	³⁸Ar	38	18	20
51	⁴⁵Sc	45	21	24
52	⁴³Ca	43	20	23
53	³⁴S	34	16	18
54	⁴⁰Ar	40	18	22
55	⁴¹K	41	19	22
56	³⁹K	39	19	20
57	³⁷Cl	37	17	20
58	³⁶S	36	16	20
59	³⁵Cl	35	17	18
60	³⁰Si	30	14	16
61	³²S	32	16	16
62	³³S	33	16	17
63	³¹P	31	15	16
64	²⁸Si	28	14	14
65	²⁹Si	29	14	15
66	²⁷Al	27	13	14
67	²⁶Mg	26	12	14
68	²⁴Mg	24	12	12
69	²⁵Mg	25	12	13
70	²³Na	23	11	12
71	²²Ne	22	10	12
72	²⁰Ne	20	10	10
73	¹⁶O	16	8	8
74	²¹Ne	21	10	11
75	¹⁹F	19	9	10
76	¹⁷O	17	8	9
77	¹⁸O	18	8	10
78	¹²C	12	6	6
79	¹⁵N	15	7	8
80	¹⁴N	14	7	7
81	¹³C	13	6	7
82	⁴He	4	2	2
83	¹¹B	11	5	6
84	¹⁰B	10	5	5
85	⁹Be	9	4	5
86	⁷Li	7	3	4
87	⁶Li	6	3	3
88	³He	3	2	1
89	²H	2	1	1
90	¹H	1	1	0

Nuclides that are observationally stable and a theoretical decay mode of spontaneous fission

Nuclides that are observationally stable, but have theoretical decay modes other than spontaneous fission

Stable nuclides for which decay has been searched for but not found (only lower bounds known)

Primordial radioactive nuclides (half-life > 10⁸ years)

no	nuclide	A	Z	N	energy	half-life	half-life	decay mode	decay energy
253	¹²⁸Te	128	52	76				β⁻β⁻	0.868
254	¹²⁴Xe	124	54	70				εε	2.864
255	⁷⁸Kr	78	36	42				εε	2.846
256	¹³⁶Xe	136	54	82				β⁻β⁻	2.462
257	⁷⁶Ge	76	32	44				β⁻β⁻	2.039
258	¹³⁰Ba	130	56	74				εε	2.620
259	⁸²Se	82	34	48				β⁻β⁻	2.995
260	¹¹⁶Cd	116	48	68				β⁻β⁻	2.809
261	⁴⁸Ca	48	20	28				β⁻β⁻	4.274
262	²⁰⁹Bi	209	83	126				α	3.137
263	⁹⁶Zr	96	40	56				β⁻β⁻	3.348
264	¹³⁰Te	130	52	78				β⁻β⁻	2.530
265	¹⁵⁰Nd	150	60	90				β⁻β⁻	3.367
266	¹⁰⁰Mo	100	42	58				β⁻β⁻	3.035
267	¹⁵¹Eu	151	63	88				α	1.964
268	¹⁸⁰W	180	74	106				α	2.509
269	⁵⁰V	50	23	27				β⁺, β⁻	2.205, 1.038
270	¹¹³Cd	113	48	65				β⁻	0.321
271	¹⁴⁸Sm	148	62	86				α	1.986
272	¹⁴⁴Nd	144	60	84				α	1.905
273	¹⁸⁶Os	186	76	110				α	2.823
274	¹⁷⁴Hf	174	72	102				α	2.497
275	¹¹⁵In	115	49	66				β⁻	0.499
276	¹⁵²Gd	152	64	88				α	2.203
277	¹⁹⁰Pt	190	78	112				α	3.252
278	¹⁴⁷Sm	147	62	85				α	2.310
279	¹³⁸La	138	57	81				ε, β⁻	1.737, 1.044
280	⁸⁷Rb	87	37	50				β⁻	0.283
281	¹⁸⁷Re	187	75	112				β⁻	0.0026
282	¹⁷⁶Lu	176	71	105				β⁻	1.193
283	²³²Th	232	90	142				α, SF	4.083
284	²³⁸U	238	92	146				α, SF, β⁻β⁻	4.270
285	⁴⁰K	40	19	21				β⁻, ε, β⁺	1.311, 1.505, 1.505
286	²³⁵U	235	92	143				α, SF	4.679

Radionuclides with half-lives of 10000 years to 10⁸ years

Radionuclides with half-lives of 10 years to 10000 years

Radionuclides with half-lives of 1 day to 10 years

Radionuclides with half-lives of 1 hour to 1 day

no	nuclide	Z	N	energy	half-life	half-life	decay mode	notes
677	^197mHg	80	117			23.8	IT
678	¹⁸⁷W	74	113			23.7	β⁻
679	^248mBk	97	151			23.7	β⁻, EC
680	¹⁷³Hf	72	101			23.6	β⁺
681	⁹⁶Nb	41	55			23.4	β⁻
682	^154m2Tb	65	89			22.7	β⁺, IT
683	^236mNp	93	143			22.5	EC, β⁻
684	⁴³K	19	24			22.3	β⁻
685	¹⁸²Os	76	106			22.1	β⁺
686	²²⁸Pa	91	137			22.0	β⁺, α
687	⁴⁸Cr	24	24			21.6	β⁺
688	¹⁵⁴Tb	65	89			21.5	β⁺, β⁻
689	²⁰⁰Pb	82	118			21.5	β⁺
690	¹¹²Pd	46	66			21.0	β⁻
691	²⁸Mg	12	16			20.9	β⁻	CG
692	¹⁰⁰Rh	45	55			20.8	β⁺
693	¹³³I	53	80			20.8	β⁻
694	¹²²Xe	54	68			20.1	β⁺
695	²⁵⁵Fm	100	155			20.1	α, SF
696	⁹⁵Tc	43	52			20.0	β⁺
697	¹⁸¹Re	75	106			19.9	β⁺
698	¹⁹⁷Pt	78	119			19.9	β⁻
699	¹³⁵La	57	78			19.5	β⁺
700	¹⁹⁴Ir	77	117			19.3	β⁻
701	¹⁴²Pr	59	83			19.1	β⁻,EC
702	^200mAu	79	121			18.7	β⁻, IT
703	¹⁵⁹Gd	64	95			18.5	β⁻
704	¹³⁵Ce	58	77			17.7	β⁺
705	¹⁹³Au	79	114			17.7	β⁺
706	¹⁵¹Tb	65	86			17.6	β⁺, α
707	⁵⁵Co	27	28			17.5	β⁺
708	¹⁵²Tb	65	87			17.5	β⁺, α
709	¹⁸⁸Re	75	113			17.0	β⁻	IM
710	¹²⁵Xe	54	71			16.9	β⁺
711	⁹⁷Zr	40	57			16.7	β⁻
712	¹⁸⁶Ir	77	109			16.6	β⁺
713	⁸⁶Zr	40	46			16.5	β⁺
714	⁷⁶Br	35	41			16.2	β⁺
715	¹¹⁹Te	52	67			16.1	EC, e+
716	²⁴²Am	95	147			16.0	β⁻, EC
717	¹⁷⁰Hf	72	98			16.0	β⁺
718	¹⁵⁷Eu	63	94			15.2	β⁻
719	²⁴Na	11	13			15.0	β⁻	CG, IM
720	⁷⁶Kr	36	40			14.8	β⁺
721	⁸⁶Y	39	47			14.7	β⁺
722	²¹¹Rn	86	125			14.6	β⁺, α
723	⁹⁰Nb	41	49			14.6	β⁺
724	¹⁸⁵Ir	77	108			14.4	β⁺
725	²⁴⁰U	92	148			14.1	β⁻	DP
726	⁷²Ga	31	41			14.1	β⁻
727	^69mZn	30	39			13.8	IT, β⁻
728	¹⁰⁹Pd	46	63			13.7	β⁻
729	^87mY	39	48			13.4	IT, β⁺
730	¹²³I	53	70			13.2	β⁺	IM
731	^191mOs	76	115			13.1	IT
732	¹⁸³Os	76	107			13.0	β⁺
733	^150mEu	63	87			12.8	β⁻, β⁺
734	⁶⁴Cu	29	35			12.7	β⁺, β⁻	IM
735	^182mRe	75	107			12.7	β⁺
736	²⁰⁰Pt	78	122			12.5	β⁻
737	¹³⁰I	53	77			12.4	β⁻
738	⁴²K	19	23			12.3	β⁻	IM
739	¹⁷¹Hf	72	99			12.1	β⁺
740	²³⁹Am	95	144			11.9	β⁺, α
741	^193mHg	80	113			11.8	β⁺, IT
742	²⁰³Bi	83	120			11.8	β⁺
743	⁷⁷Ge	32	45			11.3	β⁻
744	²⁰⁴Bi	83	121			11.2	β⁺
745	¹⁸⁹Pt	78	111			10.9	β⁺
746	²¹²Pb	82	130			10.6	β⁻	DP, IM
747	¹⁹⁵Hg	80	115			10.5	β⁺
748	¹⁷⁵Ta	73	102			10.5	β⁺
749	²⁴⁵Pu	94	151			10.5	β⁻
750	¹⁸⁷Ir	77	110			10.5	β⁺
751	¹⁶⁵Er	68	97			10.4	β⁺
752	⁹³Y	39	54			10.2	β⁻
753	²⁴⁴Am	95	149			10.1	β⁻
754	²⁶⁶Lr	103	163			10.0	SF
755	^154m1Tb	65	89			9.99	β⁺, IT
756	^183mOs	76	107			9.90	β⁺, IT
757	¹⁵⁵Dy	66	89			9.90	β⁺
758	⁹¹Sr	38	53			9.63	β⁻
759	^196m2Au	79	117			9.60	IT
760	⁶⁶Ga	31	35			9.49	β⁺
761	¹⁵⁶Sm	62	94			9.40	β⁻
762	¹²⁷Te	52	75			9.35	β⁻
763	²⁰¹Pb	82	119			9.33	β⁺
764	^152mEu	63	89			9.31	β⁻, β⁺
765	⁶²Zn	30	32			9.19	β⁺
766	¹³⁵Xe	54	81			9.14	β⁻
767	^58mCo	27	31			9.10	IT
768	¹²⁸Sb	51	77			9.01	β⁻
769	¹³⁷Ce	58	79			9.00	β⁺
770	²³⁴Pu	94	140			8.80	β⁺, α
771	¹⁸⁴Ta	73	111			8.70	β⁻
772	²⁵⁰Es	99	151			8.60	β⁺, α
773	¹⁰¹Pd	46	55			8.47	β⁺
774	⁵²Fe	26	26			8.28	β⁺
775	¹⁷³Tm	69	104			8.24	β⁻
776	¹⁸⁰Ta	73	107			8.15	EC, β⁻
777	¹⁵⁷Dy	66	91			8.14	β⁺
778	²¹⁰At	85	125			8.10	β⁺, α
779	¹⁷⁶Ta	73	103			8.09	β⁺
780	¹⁶⁶Tm	69	97			7.70	β⁺
781	^256mEs	99	157			7.60	β⁻
782	¹⁷¹Er	68	103			7.52	β⁻
783	¹⁹⁹Tl	81	118			7.42	β⁺
784	²¹¹At	85	126			7.21	β⁺, α
785	⁷³Se	34	39			7.15	β⁺
786	^93mMo	42	51			6.85	IT, β⁺
787	²³⁴Pa	91	143			6.70	β⁻	DP
788	¹³⁵I	53	82			6.57	β⁻
789	¹⁰⁷Cd	48	59			6.50	β⁺
790	^82mRb	37	45			6.47	β⁺, IT
791	¹⁵³Dy	66	87			6.40	β⁺, α
792	¹²⁷Cs	55	72			6.25	β⁺
793	²²⁸Ac	89	139			6.15	β⁻	DP
794	^99mTc	43	56			6.01	IT, β⁻	IM
795	¹⁴⁵Pr	59	86			5.98	β⁻
796	^189mOs	76	113			5.81	IT
797	²⁰⁷Po	84	123			5.80	β⁺, α
798	⁹⁰Mo	42	48			5.56	β⁺
799	²⁵⁷Md	101	156			5.52	EC, α, SF
800	^111mPd	46	65			5.50	IT, β⁻
801	^139mNd	60	79			5.50	β⁺, IT
802	^180mHf	72	108			5.47	IT, β⁻
803	²⁰⁹At	85	124			5.41	β⁺, α
804	¹¹³Ag	47	66			5.37	β⁻
805	^156m2Tb	65	91			5.30	IT, β⁺
806	¹⁹⁸Tl	81	117			5.30	β⁺
807	²⁵¹Fm	100	151			5.30	β⁺, α
808	¹³⁸Nd	60	78			5.04	β⁺
809	^160mHo	67	93			5.02	IT, β⁺
810	^118mSb	51	67			5.00	β⁺
811	²⁴³Pu	94	149			4.96	β⁻
812	¹⁹²Au	79	113			4.94	β⁺
813	¹¹⁰In	49	61			4.90	β⁺
814	^133mCe	58	75			4.90	β⁺
815	⁹⁴Tc	43	51			4.88	β⁺
816	^85mY	39	46			4.86	β⁺, IT
817	⁷³Ga	31	42			4.86	β⁻
818	¹⁹²Hg	80	112			4.85	β⁺
819	¹³²La	57	75			4.80	β⁺
820	^99mRh	45	54			4.70	β⁺, IT
821	²⁶⁷Db	105	162			4.60	SF
822	¹⁷⁹Lu	71	108			4.59	β⁻
823	⁸¹Rb	37	44			4.57	β⁺	IM
824	²⁴³Bk	97	146			4.50	β⁺, α
825	^115mIn	49	66			4.49	IT, β⁻
826	^85mKr	36	49			4.48	β⁻, IT
827	¹⁰⁵Ru	44	61			4.44	β⁻
828	^80mBr	35	45			4.42	IT
829	¹³⁹Pr	59	80			4.41	β⁺
830	¹²⁹Sb	51	78			4.40	β⁻
831	²⁴⁴Bk	97	147			4.35	β⁺, α
832	¹⁰⁹In	49	60			4.20	β⁺
833	¹⁸⁴Hf	72	112			4.12	β⁻
834	¹⁴⁹Tb	65	84			4.12	β⁺, α
835	¹¹⁰Sn	50	60			4.11	β⁺
836	⁴⁴Sc	21	23			3.97	β⁺
837	^71mZn	30	41			3.96	β⁻, IT
838	¹⁴¹La	57	84			3.92	β⁻
839	¹³³La	57	76			3.91	β⁺
840	⁴³Sc	21	22			3.89	β⁺
841	^195mIr	77	118			3.80	β⁻, IT
842	¹⁹³Hg	80	113			3.80	β⁺
843	^176mLu	71	105			3.66	β⁻, EC
844	²⁶²Lr	103	159			3.60	SF, β⁺, α
845	^202mPb	82	120			3.54	IT, β⁺
846	⁹²Y	39	53			3.54	β⁻
847	²⁰⁴Po	84	120			3.53	β⁺, α
848	¹³²Ce	58	74			3.51	β⁺
849	¹⁵⁰Tb	65	85			3.48	β⁺, α
850	^117mCd	48	69			3.36	β⁻
851	⁶¹Cu	29	32			3.33	β⁺
852	²⁰⁹Pb	82	127			3.25	β⁻	DP
853	²⁵⁴Fm	100	154			3.24	α, SF
854	²⁵⁰Bk	97	153			3.21	β⁻
855	¹⁶¹Er	68	93			3.21	β⁺
856	^190mRe	75	115			3.20	β⁻, IT
857	^90mY	39	51			3.19	IT, β⁻
858	¹⁹¹Au	79	112			3.18	β⁺
859	¹⁷³Ta	73	100			3.14	β⁺
860	¹¹²Ag	47	65			3.13	β⁻
861	²⁴⁷Cf	98	149			3.11	β⁺, α
862	¹⁸⁴Ir	77	107			3.09	β⁺
863	^190m3Ir	77	113			3.09	β⁺, IT
864	⁴⁵Ti	22	23			3.08	β⁺
865	¹⁶⁷Ho	67	100			3.00	β⁻
866	¹³⁴Sm	62	72			2.91	IT
867	²³⁹Cm	96	143			2.90	β⁺, α
868	¹⁹⁷Tl	81	116			2.84	β⁺
869	⁸⁸Kr	36	52			2.84	β⁻
870	³⁸S	16	22			2.84	β⁻
871	^87mSr	38	49			2.82	IT, EC
872	¹¹⁷Sb	51	66			2.80	β⁺
873	²²⁴Ac	89	135			2.78	β⁺, α, β⁻
874	⁹³Tc	43	50			2.75	β⁺
875	⁸⁵Y	39	46			2.68	β⁺
876	¹⁵⁰Pm	61	89			2.68	β⁻
877	⁹²Sr	38	54			2.66	β⁻
878	²⁵⁶Fm	100	156			2.63	SF, α
879	³¹Si	14	17			2.62	β⁻	CG
880	⁵⁶Mn	25	31			2.58	β⁻
881	⁶⁵Ni	28	37			2.52	β⁻
882	¹⁹⁵Ir	77	118			2.50	β⁻
883	¹⁷⁶W	74	102			2.50	β⁺
884	¹¹⁷Cd	48	69			2.49	β⁻
885	¹¹⁶Te	52	64			2.49	β⁺
886	¹⁴¹Nd	60	81			2.49	β⁺
887	¹⁶¹Ho	67	94			2.48	β⁺
888	²¹⁰Rn	86	124			2.40	α, β⁺
889	¹⁹⁸Pb	82	116			2.40	β⁺
890	²³⁸Cm	96	142			2.40	β⁺, α
891	⁸³Br	35	48			2.40	β⁻
892	¹⁵²Dy	66	86			2.38	β⁺, α	IM
893	^178mTa	73	105			2.36	β⁺
894	¹⁸⁷Pt	78	109			2.35	β⁺
895	¹⁶⁵Dy	66	99			2.33	β⁻
896	²⁶⁷Rf	104	163			2.30	SF
897	¹³²I	53	79			2.30	β⁻
898	¹⁵⁸Er	68	90			2.29	β⁺
899	⁶⁶Ge	32	34			2.26	β⁺
900	¹²⁹Ba	56	73			2.23	β⁺
901	¹⁵⁰Sm	62	88			2.22	β⁺, α
902	¹⁷⁷W	74	103			2.20	β⁺
903	^106mRh	45	61			2.18	β⁻
904	^129mBa	56	73			2.16	β⁺, IT
905	^138mPr	59	79			2.12	β⁺
906	¹²¹I	53	68			2.12	β⁺
907	¹²⁷Sn	50	77			2.10	β⁻
908	¹²³Xe	54	69			2.08	β⁺
909	¹⁸⁶Pt	78	108			2.08	β⁺, α
910	²⁴⁵Am	95	150			2.05	β⁻
911	⁸⁹Nb	41	48			2.03	β⁺
912	^195mOs	76	119			2.00	β⁻, IT
913	^117mIn	49	68			1.94	β⁻, IT
914	^186mIr	77	109			1.92	β⁺, IT
915	¹⁷⁷Yb	70	107			1.91	β⁻
916	^198mTl	81	117			1.87	β⁺, IT
917	¹⁹⁶Tl	81	115			1.84	β⁺
918	^83m2Kr	36	47			1.83	IT
919	¹⁸F	9	9			1.83	β⁺	CG,IM
920	⁴¹Ar	18	23			1.83	β⁻	CG
921	¹⁶³Tm	69	94			1.81	β⁺
922	²³⁹Pa	91	148			1.80	β⁻
923	²⁰¹Bi	83	118			1.80	β⁺, α
924	²⁰⁷At	85	122			1.80	β⁺, α
925	²²⁴Rn	86	138			1.78	β⁻
926	⁸⁰Sr	38	42			1.77	β⁺
927	¹⁸¹Os	76	105			1.75	β⁺
928	²⁰⁵Po	84	121			1.74	β⁺, α
929	¹⁴⁹Nd	60	89			1.73	β⁻
930	²⁰²Bi	83	119			1.72	β⁺, α
931	²⁴⁹Es	99	150			1.70	β⁺~, α
932	¹⁴⁷Tb	65	82			1.70	β⁺
933	⁸⁷Zr	40	47			1.68	β⁺
934	¹²⁶Ba	56	70			1.67	β⁺
935	^113mIn	49	64			1.66	IT
936	⁶¹Co	27	34			1.65	β⁻
937	⁹⁵Ru	44	51			1.64	β⁺
938	²³⁸Am	95	143			1.63	β⁺,α
939	²⁰⁸At	85	123			1.63	β⁺, α
940	¹³³Ce	58	75			1.62	β⁺
941	⁷⁵Br	35	40			1.61	β⁺
942	^152m5Eu	63	89			1.60	IT
943	²⁵⁹Md	101	158			1.60	SF, α
944	^197mPt	78	119			1.59	IT, β⁻
945	²³⁰Ra	88	142			1.55	β⁻
946	¹⁴²La	57	85			1.52	β⁻
947	⁷⁸As	33	45			1.51	β⁻
948	¹⁹⁹Pb	82	117			1.50	β⁺
949	⁷⁸Ge	32	46			1.47	β⁻
950	²⁵⁵Cf	98	157			1.42	β⁻
951	^196mTl	81	115			1.41	β⁺, IT
952	^196mIr	77	119			1.40	β⁻, IT
953	^132mI	53	79			1.39	IT, β⁻
954	¹³⁹Ba	56	83			1.38	β⁻
955	⁷⁵Ge	32	43			1.38	β⁻
956	¹²⁰I	53	67			1.36	β⁺
957	²⁶⁶Db	105	161			1.33	α ?, SF ?, β⁺ ?
958	²⁵⁶Md	101	155			1.28	β⁺, α, SF
959	¹³⁷Pr	59	78			1.28	β⁺
960	⁸⁷Kr	36	51			1.27	β⁻
961	¹⁶⁴Yb	70	94			1.26	β⁺
962	¹⁶³Er	68	95			1.25	β⁺
963	⁷⁷Kr	36	41			1.24	β⁺
964	¹⁷⁸Yb	70	108			1.23	β⁻
965	²³⁷Am	95	142			1.22	β⁺,α
966	¹⁴²Sm	62	80			1.21	β⁺
967	⁹⁷Nb	41	56			1.20	β⁻
968	¹⁸⁵Pt	78	107			1.18	β⁺
969	¹⁹⁵Tl	81	114			1.16	β⁺
970	¹²⁹Te	52	77			1.16	β⁻
971	¹⁰⁴Ag	47	57			1.15	β⁺
972	^110mIn	49	61			1.15	β⁺
973	¹⁷⁴Ta	73	101			1.14	β⁺
974	⁶⁸Ga	31	37			1.13	β⁺	IM
975	^85mSr	38	47			1.13	IT, β⁺
976	^190mIr	77	113			1.12	IT
977	^162mHo	67	95			1.12	IT, β⁺
978	^204m2Pb	82	122			1.12	IT
979	^89mNb	41	48			1.10	β⁺
980	¹⁰³Ag	47	56			1.10	β⁺
981	²⁴⁹Cm	96	153			1.07	β⁻
982	¹⁸³Hf	72	111			1.07	β⁻
983	²²⁹Ac	89	140			1.05	β⁻
984	¹¹⁷Te	52	65			1.03	β⁺
985	²⁴⁰Np	93	147			1.03	β⁻	DP
986	^182mHf	72	110			1.03	β⁻, IT
987	²¹²Bi	83	129			1.01	β⁻,α	DP
988	^116mSb	51	65			1.01	β⁺
989	¹⁴⁸Tb	65	83			1.00	β⁺
990	²⁷⁰Db	105	165			1.00	α, SF, ε?

Radionuclides with half-lives of 1 minute to 1 hour

Radionuclides with half-lives of 1 second to 1 minute

Radionuclides with half-lives less than 1 second

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