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Isotopes of europium

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Isotopes ofeuropium (₆₃Eu)

Main isotopes^[1]			Decay
	abundance	half-life(t_1/2)	mode	product
¹⁵⁰Eu	synth	36.9 y	β⁺	¹⁵⁰Sm
¹⁵¹Eu	47.8%	4.62×10¹⁸ y	α	¹⁴⁷Pm
¹⁵²Eu	synth	13.54 y	β⁺	¹⁵²Sm
¹⁵²Eu	synth	13.54 y	β⁻	¹⁵²Gd
¹⁵³Eu	52.2%	stable
¹⁵⁴Eu	synth	8.59 y	β⁻	¹⁵⁴Gd
¹⁵⁵Eu	synth	4.76 y	β⁻	¹⁵⁵Gd

Standard atomic weightA_r°(Eu)

151.964±0.001^[2]
151.96±0.01 (abridged)^[3]

Naturally occurringeuropium (₆₃Eu) is composed of twoisotopes,¹⁵¹Eu and¹⁵³Eu, with¹⁵³Eu being the most abundant (52.2%natural abundance). While¹⁵³Eu is observationally stable (theoretically can undergoalpha decay with half-life over 5.5×10¹⁷ years),¹⁵¹Eu was found in 2007 to be unstable and undergoalpha decay.^[4] Thehalf-life is measured to be (4.62 ± 0.95(stat.) ± 0.68(syst.)) × 10¹⁸ years^[5] which corresponds to 1 alpha decay per two minutes in every kilogram of natural europium. Besides the natural radioisotope¹⁵¹Eu, 36 artificial radioisotopes have been characterized, with the most stable being¹⁵⁰Eu with ahalf-life of 36.9 years,¹⁵²Eu with a half-life of 13.516 years,¹⁵⁴Eu with a half-life of 8.593 years, and¹⁵⁵Eu with a half-life of 4.7612 years. The majority of the remainingradioactive isotopes, which range from¹³⁰Eu to¹⁷⁰Eu, have half-lives that are less than 12.2 seconds. This element also has 18metastable isomers, with the most stable being^150mEu (t_1/2 12.8 hours),^152m1Eu (t_1/2 9.3116 hours) and^152m5Eu (t_1/2 96 minutes).

The primarydecay mode before the most abundant stable isotope,¹⁵³Eu, iselectron capture, and the primary mode after isbeta decay. The primarydecay products before¹⁵³Eu areisotopes of samarium and the primary products after areisotopes of gadolinium.

List of isotopes

[edit]

Nuclide ^{[n 1]}	Z	N	Isotopic mass(Da)^[6] ^{[n 2]}^{[n 3]}	Half-life^[1] ^{[n 4]}^{[n 5]}	Decay mode^[1] ^{[n 6]}	Daughter isotope ^{[n 7]}^{[n 8]}	Spin and parity^[1] ^{[n 9]}^{[n 5]}	Natural abundance(mole fraction)
Nuclide ^{[n 1]}	Excitation energy^{[n 5]}			Half-life^[1] ^{[n 4]}^{[n 5]}	Decay mode^[1] ^{[n 6]}	Daughter isotope ^{[n 7]}^{[n 8]}	Spin and parity^[1] ^{[n 9]}^{[n 5]}	Normal proportion^[1]	Range of variation
¹³⁰Eu	63	67	129.96402(58)#	1.0(4) ms	p	¹²⁹Sm	(1+)
¹³¹Eu	63	68	130.95763(43)#	17.8(19) ms	p (89%)	¹³⁰Sm	3/2+
					β⁺ (?%)	¹³¹Sm
					β⁺, p (?%)	¹³⁰Pm
¹³⁴Eu	63	71	133.94654(32)#	0.5(2) s	β⁺	¹³⁴Sm
¹³⁴Eu	63	71	133.94654(32)#	0.5(2) s	β⁺, p (?%)	¹³³Pm
¹³⁵Eu	63	72	134.94187(21)#	1.5(2) s	β⁺	¹³⁵Sm	5/2+#
¹³⁶Eu	63	73	135.93962(21)#	3.3(3) s	β⁺ (99.91%)	¹³⁶Sm	6+#
¹³⁶Eu	63	73	135.93962(21)#	3.3(3) s	β⁺, p (0.09%)	¹³⁵Pm	6+#
^136mEu^{[n 10]}	100(100)# keV			3.8(3) s	β⁺ (99.91%)	¹³⁶Sm	1+#
^136mEu^{[n 10]}	100(100)# keV			3.8(3) s	β⁺, p (0.09%)	¹³⁵Pm	1+#
¹³⁷Eu	63	74	136.9354307(47)	8.4(5) s	β⁺	¹³⁷Sm	5/2+#
¹³⁸Eu	63	75	137.933709(30)	5# s			2−#
^138mEu^{[n 10]}	100(50)# keV			12.1(6) s	β⁺	¹³⁸Sm	7−#
¹³⁹Eu	63	76	138.929792(14)	17.9(6) s	β⁺	¹³⁹Sm	(11/2)−
^139mEu	148.3(3) keV			10(2) μs	IT	¹³⁹Eu	(7/2+)
¹⁴⁰Eu	63	77	139.928088(55)	1.51(2) s	β⁺ (95.1%)	¹⁴⁰Sm	1+
¹⁴⁰Eu	63	77	139.928088(55)	1.51(2) s	EC (4.9%)	¹⁴⁰Sm	1+
^140m1Eu	210(14) keV			125(2) ms	IT (>99%)	¹⁴⁰Eu	(5−)
^140m1Eu	210(14) keV			125(2) ms	β⁺ (>1%)	¹⁴⁰Sm	(5−)
^140m2Eu	669(14) keV			299.8(21) ns	IT	¹⁴⁰Eu	(8+)
¹⁴¹Eu	63	78	140.924932(14)	40.7(7) s	β⁺	¹⁴¹Sm	5/2+
^141mEu	96.45(7) keV			2.7(3) s	IT (86%)	¹⁴¹Eu	11/2−
^141mEu	96.45(7) keV			2.7(3) s	β⁺ (14%)	¹⁴¹Sm	11/2−
¹⁴²Eu	63	79	141.923447(32)	2.36(10) s	β⁺ (89.9%)	¹⁴²Sm	1+
¹⁴²Eu	63	79	141.923447(32)	2.36(10) s	EC (11.1%)	¹⁴²Sm	1+
^142mEu	450(30) keV			1.223(8) min	β⁺	¹⁴²Sm	8−
¹⁴³Eu	63	80	142.920299(12)	2.59(2) min	β⁺	¹⁴³Sm	5/2+
^143mEu	389.51(4) keV			50.0(5) μs	IT	¹⁴³Eu	11/2−
¹⁴⁴Eu	63	81	143.918819(12)	10.2(1) s	β⁺	¹⁴⁴Sm	1+
^144mEu	1127.6(6) keV			1.0(1) μs	IT	¹⁴⁴Eu	8−
¹⁴⁵Eu	63	82	144.9162727(33)	5.93(4) d	β⁺	¹⁴⁵Sm	5/2+
^145mEu	716.0(3) keV			490(30) ns	IT	¹⁴⁵Eu	11/2−
¹⁴⁶Eu	63	83	145.9172109(65)	4.61(3) d	β⁺	¹⁴⁶Sm	4−
^146mEu	666.33(11) keV			235(3) μs	IT	¹⁴⁶Eu	9+
¹⁴⁷Eu	63	84	146.9167524(28)	24.1(6) d	β⁺	¹⁴⁷Sm	5/2+
¹⁴⁷Eu	63	84	146.9167524(28)	24.1(6) d	α (0.0022%)	¹⁴³Pm	5/2+
^147mEu	625.27(5) keV			765(15) ns	IT	¹⁴⁷Eu	11/2−
¹⁴⁸Eu	63	85	147.918091(11)	54.5(5) d	β⁺	¹⁴⁸Sm	5−
¹⁴⁸Eu	63	85	147.918091(11)	54.5(5) d	α (9.4×10⁻⁷%)	¹⁴⁴Pm	5−
^148mEu	720.4(3) keV			162(8) ns	IT	¹⁴⁸Eu	9+
¹⁴⁹Eu	63	86	148.9179369(42)	93.1(4) d	EC	¹⁴⁹Sm	5/2+
^149mEu	496.386(2) keV			2.45(5) μs	IT	¹⁴⁹Eu	11/2−
¹⁵⁰Eu	63	87	149.9197071(67)	36.9(9) y	β⁺	¹⁵⁰Sm	5−
^150mEu	41.7(10) keV			12.8(1) h	β⁻ (89%)	¹⁵⁰Gd	0−
					β⁺ (11%)	¹⁵⁰Sm
					IT (<5×10⁻⁸%)^[7]	¹⁵⁰Eu
¹⁵¹Eu^{[n 11]}	63	88	150.9198566(13)	4.6(12)×10¹⁸ y	α	¹⁴⁷Pm	5/2+	0.4781(6)
^151mEu	196.245(10) keV			58.9(5) μs	IT	¹⁵¹Eu	11/2−
¹⁵²Eu	63	89	151.9217510(13)	13.517(6) y	β⁺ (72.08%)	¹⁵²Sm	3−
¹⁵²Eu	63	89	151.9217510(13)	13.517(6) y	β⁻ (27.92%)	¹⁵²Gd	3−
^152m1Eu	45.5998(4) keV			9.3116(13) h	β⁻ (73%)	¹⁵²Gd	0−
^152m1Eu	45.5998(4) keV			9.3116(13) h	β⁺ (27%)	¹⁵²Sm	0−
^152m2Eu	65.2969(4) keV			940(80) ns	IT	¹⁵²Eu	1−
^152m3Eu	78.2331(4) keV			165(10) ns	IT	¹⁵²Eu	1+
^152m4Eu	89.8496(4) keV			384(10) ns	IT	¹⁵²Eu	4+
^152m5Eu	147.86(10) keV			95.8(4) min	IT	¹⁵²Eu	8−
¹⁵³Eu^{[n 12]}	63	90	152.9212368(13)	Observationally Stable^{[n 13]}^[8]^[9]			5/2+	0.5219(6)
^153mEu	1771.0(4) keV			475(10) ns	IT	¹⁵³Eu	19/2−
¹⁵⁴Eu^{[n 12]}	63	91	153.9229857(13)	8.592(3) y	β⁻ (99.98%)	¹⁵⁴Gd	3−
¹⁵⁴Eu^{[n 12]}	63	91	153.9229857(13)	8.592(3) y	EC (0.018%)	¹⁵⁴Sm	3−
^154m1Eu	68.1702(4) keV			2.2(1) μs	IT	¹⁵⁴Eu	2+
^154m2Eu	145.3(3) keV			46.3(4) min	IT	¹⁵⁴Eu	(8−)
¹⁵⁵Eu^{[n 12]}	63	92	154.9228998(13)	4.742(8) y	β⁻	¹⁵⁵Gd	5/2+
¹⁵⁶Eu^{[n 12]}	63	93	155.9247630(38)	15.19(8) d	β⁻	¹⁵⁶Gd	0+
¹⁵⁷Eu	63	94	156.9254326(45)	15.18(3) h	β⁻	¹⁵⁷Gd	5/2+
¹⁵⁸Eu	63	95	157.9277822(22)	45.9(2) min	β⁻	¹⁵⁸Gd	1−
¹⁵⁹Eu	63	96	158.9290995(46)	18.1(1) min	β⁻	¹⁵⁹Gd	5/2+
¹⁶⁰Eu	63	97	159.93183698(97)	42.6(5) s	β⁻	¹⁶⁰Gd	(5−)
^160mEu	93.0(12) keV			30.8(5) s	IT	¹⁶⁰Eu	(1−)
¹⁶¹Eu	63	98	160.933664(11)	26.2(23) s	β⁻	¹⁶¹Gd	5/2+#
¹⁶²Eu	63	99	161.9369583(14)	~10 s	β⁻	¹⁶²Gd	1+#
^162mEu	158.0(17) keV			15.0(5) s	IT	¹⁶²Eu	(6+)
¹⁶³Eu	63	100	162.93926551(97)	7.7(4) s	β⁻	¹⁶³Gd	5/2+#
^163mEu	964.5(5) keV			911(24) ns	IT	¹⁶³Eu	(13/2−)
¹⁶⁴Eu	63	101	163.9428529(22)	4.16(19) s	β⁻	¹⁶⁴Gd	3−#
¹⁶⁵Eu	63	102	164.9455401(56)	2.163+0.139 −0.120 s^[10]	β⁻	¹⁶⁵Gd	5/2+#
¹⁶⁶Eu	63	103	165.94981(11)#	1.277+0.100 −0.145 s^[10]	β⁻ (99.37%)	¹⁶⁶Gd	0−#
¹⁶⁶Eu	63	103	165.94981(11)#	1.277+0.100 −0.145 s^[10]	β⁻, n (0.63%)	¹⁶⁵Gd	0−#
¹⁶⁷Eu	63	104	166.95301(43)#	852+76 −54 ms^[10]	β⁻ (98.05%)	¹⁶⁷Gd	5/2+#
¹⁶⁷Eu	63	104	166.95301(43)#	852+76 −54 ms^[10]	β⁻, n (1.95%)	¹⁶⁶Gd	5/2+#
¹⁶⁸Eu	63	105	167.95786(43)#	440+48 −47 ms^[10]	β⁻ (96.05%)	¹⁶⁸Gd	6−#
¹⁶⁸Eu	63	105	167.95786(43)#	440+48 −47 ms^[10]	β⁻, n (3.95%)	¹⁶⁷Gd	6−#
¹⁶⁹Eu	63	106	168.96172(54)#	389+92 −88 ms^[10]	β⁻ (85.38%)	¹⁶⁹Gd	5/2+#
¹⁶⁹Eu	63	106	168.96172(54)#	389+92 −88 ms^[10]	β⁻, n (14.62%)	¹⁶⁸Gd	5/2+#
¹⁷⁰Eu	63	107	169.96687(54)#	197+74 −71 ms^[10]	β⁻ (>76%)	¹⁷⁰Gd
¹⁷⁰Eu	63	107	169.96687(54)#	197+74 −71 ms^[10]	β⁻, n (<24%)	¹⁶⁹Gd
This table header & footer: view

^^mEu – Excitednuclear isomer.
^( ) – Uncertainty (1σ) is given in concise form in parentheses after the corresponding last digits.
^# – Atomic mass marked #: value and uncertainty derived not from purely experimental data, but at least partly from trends from the Mass Surface (TMS).
^Bold half-life – nearly stable, half-life longer thanage of universe.
^^a ^b ^c# – Values marked # are not purely derived from experimental data, but at least partly from trends of neighboring nuclides (TNN).
^Modes of decay:
α: Alpha decay
β⁺: Positron emission
EC: Electron capture
β⁻: Beta decay
IT: Isomeric transition

p: Proton emission
^Bold italics symbol as daughter – Daughter product is nearly stable.
^Bold symbol as daughter – Daughter product is stable.
^( ) spin value – Indicates spin with weak assignment arguments.
^^a ^bOrder of ground state and isomer is uncertain.
^primordial radionuclide
^^a ^b ^c ^dFission product
^Believed to undergo α decay to¹⁴⁹Pm with a half-life over5.5×10¹⁷ years

Europium-155

[edit]

Medium-lived fission products
v
t
e
	t_½ (year)	Yield (%)	Q (keV)	βγ
¹⁵⁵Eu	4.76	0.0803	252	βγ
⁸⁵Kr	10.76	0.2180	687	βγ
^113mCd	14.1	0.0008	316	β
⁹⁰Sr	28.9	4.505	2826	β
¹³⁷Cs	30.23	6.337	1176	βγ
^121mSn	43.9	0.00005	390	βγ
¹⁵¹Sm	94.6	0.5314	77	β

Europium-155 is afission product with ahalf-life of 4.76 years. It has a maximumdecay energy of 252keV. In athermal reactor (almost all currentnuclear power plants), it has a lowfission product yield, about half of one percent as much as the most abundant fission products.

¹⁵⁵Eu's largeneutron capture cross section (about 3900 barns forthermal neutrons, 16000resonance integral) means that most of even the small amount produced is destroyed in the course of thenuclear fuel'sburnup. Yield, decay energy, and half-life are all far less than that of¹³⁷Cs and⁹⁰Sr, so¹⁵⁵Eu is not a significant contributor tonuclear waste.

Some¹⁵⁵Eu is also produced by successive neutron capture on¹⁵³Eu (nonradioactive, 350 barns thermal, 1500 resonance integral, yield is about 5 times as great as¹⁵⁵Eu) and¹⁵⁴Eu (half-life 8.6 years, 1400 barns thermal, 1600 resonance integral, fission yield is extremely small because beta decay stops at¹⁵⁴Sm). However, the differing cross sections mean that both¹⁵⁵Eu and¹⁵⁴Eu are destroyed faster than they are produced.

¹⁵⁴Eu is a prolific emitter ofgamma radiation.^[11]

Isotope	Half-life	Relative yield	Thermal neutron	Resonance integral
Eu-153	Stable	5	350	1500
Eu-154	8.6 years	Nearly 0	1500	1600
Eu-155	4.76 years	1	3900	16000

References

[edit]

^^a ^b ^c ^d ^eKondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021)."The NUBASE2020 evaluation of nuclear properties"(PDF).Chinese Physics C.45 (3): 030001.doi:10.1088/1674-1137/abddae.
^"Standard Atomic Weights: Europium".CIAAW. 1995.
^Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; Böhlke, John K.; Chesson, Lesley A.; Coplen, Tyler B.; Ding, Tiping; Dunn, Philip J. H.; Gröning, Manfred; Holden, Norman E.; Meijer, Harro A. J. (2022-05-04)."Standard atomic weights of the elements 2021 (IUPAC Technical Report)".Pure and Applied Chemistry.doi:10.1515/pac-2019-0603.ISSN 1365-3075.
^Belli, P.; et al. (2007). "Search for α decay of natural europium".Nuclear Physics A.789 (1–4):15–29.Bibcode:2007NuPhA.789...15B.doi:10.1016/j.nuclphysa.2007.03.001.
^Casali, N.; Nagorny, S. S.; Orio, F.; Pattavina, L.; et al. (2014). "Discovery of the¹⁵¹Eu α decay".Journal of Physics G: Nuclear and Particle Physics.41 (7): 075101.arXiv:1311.2834.Bibcode:2014JPhG...41g5101C.doi:10.1088/0954-3899/41/7/075101.S2CID 116920467.
^Wang, Meng; Huang, W.J.; Kondev, F.G.; Audi, G.; Naimi, S. (2021). "The AME 2020 atomic mass evaluation (II). Tables, graphs and references*".Chinese Physics C.45 (3): 030003.doi:10.1088/1674-1137/abddaf.
^"Adopted Levels for¹⁵⁰Eu"(PDF). NNDC Chart of Nuclides.
^Danevich, F. A.; Andreotti, E.; Hult, M.; Marissens, G.; Tretyak, V. I.; Yuksel, A. (2012). "Search for α decay of¹⁵¹Eu to the first excited level of¹⁴⁷Pm using underground γ-ray spectrometry".European Physical Journal A.48 (157): 157.arXiv:1301.3465.Bibcode:2012EPJA...48..157D.doi:10.1140/epja/i2012-12157-7.S2CID 118657922.
^Belli, P.; Bernabei, R.; Danevich, F. A.; et al. (2019). "Experimental searches for rare alpha and beta decays".European Physical Journal A.55 (8): 140–1–140–7.arXiv:1908.11458.Bibcode:2019EPJA...55..140B.doi:10.1140/epja/i2019-12823-2.ISSN 1434-601X.S2CID 201664098.
^^a ^b ^c ^d ^e ^fKiss, G. G.; Vitéz-Sveiczer, A.; Saito, Y.; et al. (2022)."Measuring the β-decay properties of neutron-rich exotic Pm, Sm, Eu, and Gd isotopes to constrain the nucleosynthesis yields in the rare-earth region".The Astrophysical Journal.936 (107): 107.Bibcode:2022ApJ...936..107K.doi:10.3847/1538-4357/ac80fc.hdl:2117/375253.
^"Archived copy"(PDF). Archived fromthe original(PDF) on 2011-07-06. Retrieved2011-04-02.{{cite web}}: CS1 maint: archived copy as title (link)

Isotope masses from:
- Audi, Georges; Bersillon, Olivier; Blachot, Jean;Wapstra, Aaldert Hendrik (2003),"The NUBASE evaluation of nuclear and decay properties",Nuclear Physics A,729:3–128,Bibcode:2003NuPhA.729....3A,doi:10.1016/j.nuclphysa.2003.11.001
Isotopic compositions and standard atomic masses from:
- de Laeter, John Robert; Böhlke, John Karl; De Bièvre, Paul; Hidaka, Hiroshi; Peiser, H. Steffen; Rosman, Kevin J. R.; Taylor, Philip D. P. (2003)."Atomic weights of the elements. Review 2000 (IUPAC Technical Report)".Pure and Applied Chemistry.75 (6):683–800.doi:10.1351/pac200375060683.
- Wieser, Michael E. (2006)."Atomic weights of the elements 2005 (IUPAC Technical Report)".Pure and Applied Chemistry.78 (11):2051–2066.doi:10.1351/pac200678112051.
"News & Notices: Standard Atomic Weights Revised".International Union of Pure and Applied Chemistry. 19 October 2005.
Half-life, spin, and isomer data selected from the following sources.
- Audi, Georges; Bersillon, Olivier; Blachot, Jean;Wapstra, Aaldert Hendrik (2003),"The NUBASE evaluation of nuclear and decay properties",Nuclear Physics A,729:3–128,Bibcode:2003NuPhA.729....3A,doi:10.1016/j.nuclphysa.2003.11.001
- National Nuclear Data Center."NuDat 2.x database".Brookhaven National Laboratory.
- Holden, Norman E. (2004). "11. Table of the Isotopes". In Lide, David R. (ed.).CRC Handbook of Chemistry and Physics (85th ed.).Boca Raton, Florida:CRC Press.ISBN 978-0-8493-0485-9.

Isotopes of thechemical elements

Group	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18
Period	Hydrogen and alkali metals	Alkaline earth metals													Pnictogens	Chalcogens	Halogens	Noble gases
①	Isotopes § List H 1																	Isotopes § List He 2
②	Isotopes § List Li 3	Isotopes § List Be 4											Isotopes § List B 5	Isotopes § List C 6	Isotopes § List N 7	Isotopes § List O 8	Isotopes § List F 9	Isotopes § List Ne 10
③	Isotopes § List Na 11	Isotopes § List Mg 12											Isotopes § List Al 13	Isotopes § List Si 14	Isotopes § List P 15	Isotopes § List S 16	Isotopes § List Cl 17	Isotopes § List Ar 18
④	Isotopes § List K 19	Isotopes § List Ca 20	Isotopes § List Sc 21	Isotopes § List Ti 22	Isotopes § List V 23	Isotopes § List Cr 24	Isotopes § List Mn 25	Isotopes § List Fe 26	Isotopes § List Co 27	Isotopes § List Ni 28	Isotopes § List Cu 29	Isotopes § List Zn 30	Isotopes § List Ga 31	Isotopes § List Ge 32	Isotopes § List As 33	Isotopes § List Se 34	Isotopes § List Br 35	Isotopes § List Kr 36
⑤	Isotopes § List Rb 37	Isotopes § List Sr 38	Isotopes § List Y 39	Isotopes § List Zr 40	Isotopes § List Nb 41	Isotopes § List Mo 42	Isotopes § List Tc 43	Isotopes § List Ru 44	Isotopes § List Rh 45	Isotopes § List Pd 46	Isotopes § List Ag 47	Isotopes § List Cd 48	Isotopes § List In 49	Isotopes § List Sn 50	Isotopes § List Sb 51	Isotopes § List Te 52	Isotopes § List I 53	Isotopes § List Xe 54
⑥	Isotopes § List Cs 55	Isotopes § List Ba 56	Isotopes § List Lu 71	Isotopes § List Hf 72	Isotopes § List Ta 73	Isotopes § List W 74	Isotopes § List Re 75	Isotopes § List Os 76	Isotopes § List Ir 77	Isotopes § List Pt 78	Isotopes § List Au 79	Isotopes § List Hg 80	Isotopes § List Tl 81	Isotopes § List Pb 82	Isotopes § List Bi 83	Isotopes § List Po 84	Isotopes § List At 85	Isotopes § List Rn 86
⑦	Isotopes § List Fr 87	Isotopes § List Ra 88	Isotopes § List Lr 103	Isotopes § List Rf 104	Isotopes § List Db 105	Isotopes § List Sg 106	Isotopes § List Bh 107	Isotopes § List Hs 108	Isotopes § List Mt 109	Isotopes § List Ds 110	Isotopes § List Rg 111	Isotopes § List Cn 112	Isotopes § List Nh 113	Isotopes § List Fl 114	Isotopes § List Mc 115	Isotopes § List Lv 116	Isotopes § List Ts 117	Isotopes § List Og 118
⑧	Isotopes § List Uue 119	Isotopes § List Ubn 120

			Isotopes § List La 57	Isotopes § List Ce 58	Isotopes § List Pr 59	Isotopes § List Nd 60	Isotopes § List Pm 61	Isotopes § List Sm 62	Isotopes § List Eu 63	Isotopes § List Gd 64	Isotopes § List Tb 65	Isotopes § List Dy 66	Isotopes § List Ho 67	Isotopes § List Er 68	Isotopes § List Tm 69	Isotopes § List Yb 70
			Isotopes § List Ac 89	Isotopes § List Th 90	Isotopes § List Pa 91	Isotopes § List U 92	Isotopes § List Np 93	Isotopes § List Pu 94	Isotopes § List Am 95	Isotopes § List Cm 96	Isotopes § List Bk 97	Isotopes § List Cf 98	Isotopes § List Es 99	Isotopes § List Fm 100	Isotopes § List Md 101	Isotopes § List No 102

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α:	Alpha decay
β⁺:	Positron emission
EC:	Electron capture
β⁻:	Beta decay
IT:	Isomeric transition
p:	Proton emission