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Isotopes of Tin

List, data and properties of all known isotopes of Tin.

Content
Atomic properties
Decay properties
NMR active nuclides
Radiation protection
References
Tin isotopes

All atomic nuclei of the chemical element tin are summarized under tin isotopes; these all consist of an atomic nucleus with 50 protons and, in the uncharged state, 50 electrons. The difference between the individual tin isotopes is based on the number of neutrons in the nucleus.

 

Naturally Occurring Tin Isotopes

Tin is the element with the most stable isotopes; the natural tin deposits are made up of these ten isotopes as follows:

Atomic Mass maQuantityHalf-lifeSpin
Tin
Isotopic mixture		118,710 u100 %
Isotope 112Sn111,904824(4) u0,97(1) %stable0+
Isotope 114Sn113,902783(6) u0,66(1) %stable0+
Isotope 115Sn114,9033447(1) u0,34(1) %stable1/2+
Isotope 116Sn115,901743(1) u14,54(9) %stable0+
Isotope 117Sn116,902954(3) u7,68(7) %stable1/2+
Isotope 118Sn117,901607(3) u24,22(9) %stable0+
Isotope 119Sn118,903311(5) u8,59(4) %stable1/2+
Isotope 120Sn119,902202(6) u32,58(9) %stable0+
Isotope 122Sn121,90344(2) u4,63(3) %stable0+
Isotope 124Sn123,905277(7) u5,79(5) %stable0+

 

In addition to the naturally occurring, stable tin nuclides, around 30 other radioisotopes and a large number of nuclear isomers are known.

 

Isotope Table: Tin

The two following tables list the most important data and properties of the Tin isotopes. Further information on the individual Tin isotopes is listed on separate pages and can be accessed via the link in column 1.

 

Atomic Properties

Isotope
Nuclide		ENAtomic Mass
[Nuclear Mass]
{Mass Excess}		Spin I
(h/2π)		Parent
123456
Tin-999950Sn4998.94853(54) u
[98.9211026 u]
{-47.944 MeV}
Tin-10010050Sn5099.93850(32) u
[99.9110726 u]
{-57.28688 MeV}		0+
Tin-10110150Sn51100.93526(32) u
[100.9078326 u]
{-60.30492 MeV}		(5/2+)105Te
Tin-10210250Sn52101.93029(11) u
[101.9028626 u]
{-64.93445 MeV}		0+106Te
Tin-10310350Sn53102.92810(8) u
[102.9006726 u]
{-66.97442 MeV}		(5/2+)107Te
Tin-10410450Sn54103.923105(6) u
[103.8956776 u]
{-71.62723 MeV}		0+108Te
Tin-10510550Sn55104.921268(4) u
[104.8938406 u]
{-73.33839 MeV}		(5/2+)109Te
Tin-10610650Sn56105.916957(5) u
[105.8895296 u]
{-77.35406 MeV}		0+110Te
Tin-10710750Sn57106.915714(6) u
[106.8882866 u]
{-78.5119 MeV}		(5/2+)107Sb
Tin-10810850Sn58107.911894(6) u
[107.8844666 u]
{-82.07021 MeV}		0+108Sb
Tin-10910950Sn59108.911293(9) u
[108.8838656 u]
{-82.63004 MeV}		5/2+109Sb
Tin-11011050Sn60109.907845(15) u
[109.8804176 u]
{-85.84183 MeV}		0+110Sb
Tin-11111150Sn61110.907741(6) u
[110.8803136 u]
{-85.9387 MeV}		7/2+111Sb
Tin-111m111m50Sn61110.907741(6) u
[110.8803136 u]
{-85.9387 MeV}		1/2+
Tin-11211250Sn62111.904824(4) u
[111.8773966 u]
{-88.65587 MeV}		0+112Sb
112In
Tin-11311350Sn63112.9051758(17) u
[112.8777484 u]
{-88.32817 MeV}		1/2+113Sb
Tin-113m113m50Sn63112.9051758(17) u
[112.8777484 u]
{-88.32817 MeV}		7/2+
Tin-113+113+50Sn63
Tin-11411450Sn64113.902783(6) u
[113.8753556 u]
{-90.55705 MeV}		0+114Sb
114In
Tin-114m114m50Sn64113.902783(6) u
[113.8753556 u]
{-90.55705 MeV}		7-
Tin-11511550Sn65114.9033447(1) u
[114.8759173 u]
{-90.03383 MeV}		1/2+115Sb
115In
Tin-115m1115m150Sn65114.9033447(1) u
[114.8759173 u]
{-90.03383 MeV}		7/2+
Tin-115m2115m250Sn65114.9033447(1) u
[114.8759173 u]
{-90.03383 MeV}		11/2-
Tin-11611650Sn66115.901743(1) u
[115.8743156 u]
{-91.52581 MeV}		0+116Sb
116In
Tin-11711750Sn67116.902954(3) u
[116.8755266 u]
{-90.39777 MeV}		1/2+117Sb
117In
Tin-117m117m50Sn67116.902954(3) u
[116.8755266 u]
{-90.39777 MeV}		11/2-
Tin-11811850Sn68117.901607(3) u
[117.8741796 u]
{-91.65249 MeV}		0+118Sb
118In
Tin-11911950Sn69118.903311(5) u
[118.8758836 u]
{-90.06522 MeV}		1/2+119Sb
119In
Tin-119m119m50Sn69118.903311(5) u
[118.8758836 u]
{-90.06522 MeV}		11/2-
Tin-12012050Sn70119.902202(6) u
[119.8747746 u]
{-91.09825 MeV}		0+120Sb
120In
Tin-12112150Sn71120.9042428(10) u
[120.8768154 u]
{-89.19726 MeV}		3/2+121In
Tin-121m121m50Sn71120.9042428(10) u
[120.8768154 u]
{-89.19726 MeV}		11/2-
Tin-12212250Sn72121.90344(2) u
[121.8760126 u]
{-89.94506 MeV}		0+122Sb
122In
Tin-12312350Sn73122.9057254(26) u
[122.878298 u]
{-87.81622 MeV}		11/2-123In
Tin-123m123m50Sn73122.9057254(26) u
[122.878298 u]
{-87.81622 MeV}		3/2+
Tin-12412450Sn74123.905277(7) u
[123.8778496 u]
{-88.23391 MeV}		0+124In
Tin-12512550Sn75124.9077864(11) u
[124.880359 u]
{-85.89642 MeV}		11/2-125In
Tin-125m125m50Sn75124.9077864(11) u
[124.880359 u]
{-85.89642 MeV}		3/2+
Tin-12612650Sn76125.907659(11) u
[125.8802316 u]
{-86.01509 MeV}		0+126In
127In
Tin-12712750Sn77126.910390(11) u
[126.8829626 u]
{-83.47118 MeV}		11/2-127In
Tin-127m127m50Sn77126.910390(11) u
[126.8829626 u]
{-83.47118 MeV}		(3/2+)
Tin-12812850Sn78127.910507(19) u
[127.8830796 u]
{-83.36219 MeV}		0+128In
129In
Tin-128m128m50Sn78127.910507(19) u
[127.8830796 u]
{-83.36219 MeV}		(7-)
Tin-12912950Sn79128.913482(19) u
[128.8860546 u]
{-80.591 MeV}		3/2+129In
Tin-129m129m50Sn79128.913482(19) u
[128.8860546 u]
{-80.591 MeV}		(11/2-)
Tin-13013050Sn80129.9139745(20) u
[129.8865471 u]
{-80.13224 MeV}		0+130In
131In
Tin-130m130m50Sn80129.9139745(20) u
[129.8865471 u]
{-80.13224 MeV}		(7-)
Tin-13113150Sn81130.917053(4) u
[130.8896256 u]
{-77.26463 MeV}		(3/2+)131In
132In
248Cm
Tin-131m131m50Sn81130.917053(4) u
[130.8896256 u]
{-77.26463 MeV}		(11/2-)
Tin-13213250Sn82131.9178239(21) u
[131.8903965 u]
{-76.54654 MeV}		0+132In
133In
248Cm
Tin-13313350Sn83132.9239138(20) u
[132.8964864 u]
{-70.87384 MeV}		7/2-133In
134In
Tin-13413450Sn84133.928680(3) u
[133.9012526 u]
{-66.43415 MeV}		0+248Cm
Tin-13513550Sn85134.934909(3) u
[134.9074816 u]
{-60.63188 MeV}		(7/2-)
Tin-13613650Sn86135.93999(32) u
[135.9125626 u]
{-55.89895 MeV}		0+
Tin-13713750Sn87136.94655(43) u
[136.9191226 u]
{-49.78835 MeV}
Tin-13813850Sn88137.95184(54) u
[137.9244126 u]
{-44.86075 MeV}		0+
Tin-13913950Sn89138.95873(54) u
[138.9313026 u]
{-38.44276 MeV}

 

Radioactive Decay Properties

IsotopeRadioactive DecayExtern
Half-lifeDecay ModeProbabilityEnergy
789101112
Sn-99760 nsEC p 98Cd
EC/β+ → 99In		?
?
AL
Sn-1001.16(20) sEC/β+ → 100In
EC, p → 99Cd		> 83 %
< 17 %		7.03(35) MeV
AL
Sn-1011.7(3) sEC/β+ → 101In
EC, p → 100Cd		74 %
26 %		8.31(36) MeV
AL
Sn-1023.8(2) sEC/β+ → 102In100 %5.76(10) MeVAL
Sn-1037.0(2) sEC/β+ → 103In
EC, p → 102Cd		98.8 %
1.2 %		7.66(7) MeV
AL
Sn-10420.8(5) sEC/β+ → 104In100 %4.556(8) MeVAL
Sn-10534(1) sEC/β+ → 105In
EC, p → 104Cd		100 %
?		6.303(11) MeV
AL
Sn-106115(5) sEC/β+ → 106In100 %3.254(13) MeVAL
Sn-1072.90(5) minEC/β+ → 107In100 %5.052(12) MeVAL
Sn-10810.30(8) minEC/β+ → 108In100 %2.05(1) MeVAL
Sn-10918.1(2) minEC/β+ → 109In100 %3.859(9) MeVAL
Sn-1104.154(4) hEC → 110In100 %0.628(18) MeVAL
Sn-11135.3(6) minEC/β+ → 111In100 %2.453(6) MeVAL
Sn-111m12.5(10) μsIso → 111Sn100 %
Sn-112stableAL
Sn-113115.09(3) dEC/β+ → 113In100 %1.0390(16) MeVAL
Sn-113m21.4(4) minEC/β+ → 113In
Iso → 113Sn		8.9(23) %
91.1(23) %
Sn-113+
Sn-114stableAL
Sn-114m733(14) ns
Sn-115stableAL
Sn-115m13.26(8) μsIso → 115Sn100 %
Sn-115m2159(1) μsIso → 115Sn100 %
Sn-116stableAL
Sn-117stableAL
Sn-117m14.00(5) dIso → 117Sn100 %
Sn-118stableAL
Sn-119stableAL
Sn-119m293.1(7) dIso → 119Sn100 %
Sn-120stableAL
Sn-12127.03(4) hβ- → 121Sb100 %0.4031(27) MeVAL
Sn-121m43.9(5) aβ- → 121Sb
Iso → 121Sn		22.4(20) %
77.6(20) %
Sn-122stableAL
Sn-123129.2(4) dβ- → 123Sb100 %1.4079(27) MeVAL
Sn-123m40.06(1) minβ- → 124Sb100 %
Sn-124stableAL
Sn-1259.64(3) dβ- → 125Sb100 %2.3599(26) MeVAL
Sn-125m9.52(5) minβ- → 125Sb100 %
Sn-1262.30(14) × 105 aβ- → 126Sb100 %0.38(3) MeVAL
Sn-1272.10(4) hβ- → 127Sb100 %3.229(11) MeVAL
Sn-127m4.13(3) minβ- → 127Sb100 %
Sn-12859.07(14) minβ- → 128Sb100 %1.268(14) MeVAL
Sn-128m6.5(5) sIso → 128Sn100 %
Sn-1292.23(4) minβ- → 129Sb100 %4.038(27) MeVAL
Sn-129m6.9(1) minβ- → 129Sb
Iso → 129Sn		> 99 %
< 0.002 %
Sn-1303.72(7) minβ- → 130Sb100 %2.153(14) MeVAL
Sn-130m1.7(1) minβ- → 130Sb100 %
Sn-13156.0(5) sβ- → 131Sb100 %4.717(4) MeVAL
Sn-131m58.4(5) sβ- → 131Sb
Iso → 131Sn		ca. 100 %
?
Sn-13239.7(8) sβ- → 132Sb100 %3.089(3) MeVAL
Sn-1331.46(3) sβ- → 133Sb
β-, n → 132Sb		ca. 100 %
0.0294(24) %		8.050(4) MeV
0.690(3) MeV		AL
Sn-1341.050(11) sβ- → 134Sb
β-, n → 133Sb		83(13) %
17(13) %		7.587(4) MeV
4.418(4) MeV		AL
Sn-135515(5) msβ- → 135Sb
β-, n → 134Sb
β-, 2n → 133Sb		79(3) %
21(3) %
?		9.058(4) MeV
5.317(4) MeV
AL
Sn-136345(15) msβ- → 136Sb
β-, n → 135Sb		73 %
27(4) %		8.61(30) MeV
5.72(30) MeV		AL
Sn-137190(60) msβ- → 137Sb
β-, n → 136Sb		42(15) %
58(15) %		10.27(40) MeV
6.65(40) MeV		AL
Sn-138140 msβ- → 138Sb
β-, n → 137Sb
β-, 2n → 136Sb		?
?
9.36(118) MeV
7.13(51) MeV
AL
Sn-139130 msβ- → 139Sb
β-, n → 138Sb
β-, 2n → 137Sb
β-, 3n → 136Sb		100 %
?
?
?		11.35(64) MeV
7 MeV

 

Notes (related to the columns):

1 - name of the nuclide, isotope.
2 - E: isotope symbol with mass number (superscript; number of nucleons) and Atomic number (subscript; number of protons).
3 - N: number of neutrons.
4 - relative atomic mass of the Tin isotope (isotopic mass including electrons) and the mass of the atomic nucleus in square brackets (nuclear mass, nuclide mass without electrons), each related to 12C = 12.00000 [2]. In addition, the mass excess is given in MeV.
5 - nuclear spin I, unit: h/2π.
6 - source nuclides: Possible, assumed or actual source nuclides (mother nuclides, parent nuclides). If applicable, the corresponding decay modes can be found in the data for the respective starting nuclide.

7 - isotope notation in short form.
8 - decay: half-live of the Tin isotope (a = years; ; d = days; h = hours; min = minutes; s = seconds).
9 - decay mode: type of decay into the respective daughter nuclides with n = neutron emission; p = proton emission; α = alpha decay; β- = beta minus decay with electron emission; EC = electron capture; β+ = positron emission; ε = β+ and/or EC; Iso = isomeric transition; CD = cluster decay; SF = spontaneous decay.
10 - decay probability in percent (%).
11 - decay energy; Particle energy related to decay type.
12 - other information and notes: AL = Adopted Levels (link to external data [1]).

Miscellaneous:

()- Numbers in brackets: uncertainty to represent the spread of the reported value.
~ - Theoretical values or systematic trends.
  - unlisted-: Nuclides that have already been mentioned in the literature but for some reason can no longer be found in the current nuclide tables because their discovery e.g. has not confirmed.

 

NMR active Tin nuclides

Nuclide
quantity 1)
spin		Nuclear
magnetic
moment
μ/μN		Gyromagnetic ratio
{Quadrupole moment}		Resonant
frequency
v0 bei 1 T		Relative
sensitivity
H0 = const.
v0 = const. 3)
115Sn
0,34(1) %
1/2+		- 0,9174(4)8,8014
{}		14,00770,03561
0,3290
117Sn
7,68(7) %
1/2+		-0,9995(5)9,589
{}		15,26100,04605
0,3584
119Sn
8,59(4) %
1/2+		-1,0459(5)10,0318
{-132(1)}		15,96600,05273
0,3750

1) Quantity Percentage of natural occurrence.

2) Gyromagnetic ratio: 107 rad T-1 s-1
    Quadrupole moment: Q [barn] = [100 fm2]

3) Related to 1H = 1,000.

 

Radiation Protection

According to the Radiation Protection Ordinance (StrlSchV 2018, Germany), the following values (columns 1 to 7) apply to the handling of Tin radionuclides:

NuclideLimit ValueHASS limitSCDaughter NuclidesHalf-life
Sn-110+107 Bq100 Bq/g4.1 h
Sn-111+106 Bq100 Bq/g35.3 min
Sn-113+107 Bq1 Bq/g0,3 TBq10 Bq cm-2115.1 d
Sn-117m106 Bq100 Bq/g0,5 TBq13.6 d
Sn-119m107 Bq10 Bq/g70 TBq293.0 d
Sn-121107 Bq10000 Bq/g27.0 h
Sn-121m+107 Bq1 Bq/g70 TBqSn-12155.0 a
Sn-123106 Bq100 Bq/g7 TBq129.2 d
Sn-123m106 Bq100 Bq/g40.1 min
Sn-125105 Bq10 Bq/g0,1 TBq10 Bq cm-29.6 d
Sn-126+105 Bq0,1 Bq/g0,03 TBqSb-126m230000 a
Sn-127106 Bq10 Bq/g2.1 h
Sn-128+106 Bq10 Bq/g59.1 min

(HASS = High-Activity Sealed Radioactive Sources; SC = surface contamination)

 

Literature Sources and References

Properties of the Tin nucleides

[1] - NuDat: National Nuclear Data Center, Brookhaven National Laboratory, based on ENSDF and the Nuclear Wallet Cards.

[2] - G. Audi et. al.: The NUBASE evaluation of nuclear and decay properties. Nuclear Physics, (2003), DOI 10.1016/j.nuclphysa.2003.11.001.

[3] - Live Chart of Nuclides. Nuclear structure and decay data.

Tin: NMR properties - 115Sn-NMR, 117Sn-NMR, 119Sn-NMR

[4] - N. J. Stone: Table of nuclear magnetic dipole and electric quadrupole moments. Atomic Data and Nuclear Data Tables, (2005), DOI 10.1016/j.adt.2005.04.001.

[5] - Pekka Pyykkö: Year-2008 nuclear quadrupole moments. Molecular Physics, (2008), DOI 10.1080/00268970802018367.

[6] - Pekka Pyykkö: Year-2017 nuclear quadrupole moments. Molecular Physics, (2018), DOI 10.1080/00268976.2018.1426131.

[7] - N. J. Stone: Table of recommended nuclear magnetic dipole moments. IAEA, (2019).

More sources:

[8] - Isotopic abundances, atomic weights and isotopic masses: see respective keyword.

[9] - S. Amos, J. L.Gross, M. Thoennessen:
Discovery of the calcium, indium, tin, and platinum isotopes.
In: Atomic Data and Nuclear Data Tables, (2011), DOI 10.1016/j.adt.2011.03.001.

 

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