Tin Tin is a chemical element; it has symbol Sn () and atomic number 50. A silvery-colored metal, tin is soft enough to be cut with little force, and a bar of tin can be bent by hand with little effort. When bent, a bar of tin makes a sound, the ...

(₅₀Sn) is the element with the greatest number of stable isotopes (ten; three of them are potentially radioactive but have not been observed to decay). This is probably related to the fact that 50 is a " magic number" of protons. In addition, 32 unstable tin isotopes are known, including tin-100 (¹⁰⁰Sn) (discovered in 1994) and tin-132 (¹³²Sn), which are both " doubly magic". The longest-lived tin radioisotope is tin-126 (¹²⁶Sn), with a half-life of 230,000 years. The other 28 radioisotopes have half-lives of less than a year.

List of isotopes

, -id=Tin-98 , ⁹⁸Sn , style="text-align:right" , 50 , style="text-align:right" , 48 , , , , , 0+ , , , -id=Tin-99 , rowspan=2, ⁹⁹SnHeaviest known nuclide with more protons than neutrons , rowspan=2 style="text-align:right" , 50 , rowspan=2 style="text-align:right" , 49 , rowspan=2, 98.94850(63)# , rowspan=2, 24(4) ms , β⁺ (95%) , ⁹⁹In , rowspan=2, 9/2+# , rowspan=2, , rowspan=2, , - , β⁺, p (5%) , ⁹⁸Cd , -id=Tin-100 , rowspan=2, ¹⁰⁰SnHeaviest nuclide with equal numbers of protons and neutrons with no observed α decay , rowspan=2 style="text-align:right" , 50 , rowspan=2 style="text-align:right" , 50 , rowspan=2, 99.93865(26) , rowspan=2, 1.18(8) s , β⁺ (>83%) , ¹⁰⁰In , rowspan=2, 0+ , rowspan=2, , rowspan=2, , - , β⁺, p (<17%) , ⁹⁹Cd , -id=Tin-101 , rowspan=2, ¹⁰¹Sn , rowspan=2 style="text-align:right" , 50 , rowspan=2 style="text-align:right" , 51 , rowspan=2, 100.93526(32) , rowspan=2, 2.22(5) s , β⁺ , ¹⁰¹In , rowspan=2, (7/2+) , rowspan=2, , rowspan=2, , - , β⁺, p? , ¹⁰⁰Cd , -id=Tin-102 , ¹⁰²Sn , style="text-align:right" , 50 , style="text-align:right" , 52 , 101.93029(11) , 3.8(2) s , β⁺ , ¹⁰²In , 0+ , , , -id=Tin-102m , style="text-indent:1em" , ^102mSn , colspan="3" style="text-indent:2em" , 2017(2) keV , 367(8) ns , IT , ¹⁰²Sn , (6+) , , , -id=Tin-103 , rowspan=2, ¹⁰³Sn , rowspan=2 style="text-align:right" , 50 , rowspan=2 style="text-align:right" , 53 , rowspan=2, 102.92797(11)# , rowspan=2, 7.0(2) s , β⁺ (98.8%) , ¹⁰³In , rowspan=2, 5/2+# , rowspan=2, , rowspan=2, , - , β⁺, p (1.2%) , ¹⁰²Cd , -id=Tin-104 , ¹⁰⁴Sn , style="text-align:right" , 50 , style="text-align:right" , 54 , 103.923105(6) , 20.8(5) s , β⁺ , ¹⁰⁴In , 0+ , , , -id=Tin-105 , rowspan=2, ¹⁰⁵Sn , rowspan=2 style="text-align:right" , 50 , rowspan=2 style="text-align:right" , 55 , rowspan=2, 104.921268(4) , rowspan=2, 32.7(5) s , β⁺ , ¹⁰⁵In , rowspan=2, (5/2+) , rowspan=2, , rowspan=2, , - , β⁺, p (0.011%) , ¹⁰⁴Cd , -id=Tin-106 , ¹⁰⁶Sn , style="text-align:right" , 50 , style="text-align:right" , 56 , 105.916957(5) , 1.92(8) min , β⁺ , ¹⁰⁶In , 0+ , , , -id=Tin-107 , ¹⁰⁷Sn , style="text-align:right" , 50 , style="text-align:right" , 57 , 106.915714(6) , 2.90(5) min , β⁺ , ¹⁰⁷In , (5/2+) , , , -id=Tin-108 , ¹⁰⁸Sn , style="text-align:right" , 50 , style="text-align:right" , 58 , 107.911894(6) , 10.30(8) min , β⁺ , ¹⁰⁸In , 0+ , , , -id=Tin-109 , ¹⁰⁹Sn , style="text-align:right" , 50 , style="text-align:right" , 59 , 108.911293(9) , 18.1(2) min , β⁺ , ¹⁰⁹In , 5/2+ , , , -id=Tin-110 , ¹¹⁰Sn , style="text-align:right" , 50 , style="text-align:right" , 60 , 109.907845(15) , 4.154(4) h , EC , ¹¹⁰In , 0+ , , , -id=Tin-111 , ¹¹¹Sn , style="text-align:right" , 50 , style="text-align:right" , 61 , 110.907741(6) , 35.3(6) min , β⁺ , ¹¹¹In , 7/2+ , , , -id=Tin-111m , style="text-indent:1em" , ^111mSn , colspan="3" style="text-indent:2em" , 254.71(4) keV , 12.5(10) μs , IT , ¹¹¹Sn , 1/2+ , , , -id=Tin-112 , ¹¹²Sn , style="text-align:right" , 50 , style="text-align:right" , 62 , 111.9048249(3) , colspan=3 align=center,

Observationally Stable Stable nuclides are isotopes of a chemical element whose nucleons are in a configuration that does not permit them the surplus energy required to produce a radioactive emission. The nuclei of such isotopes are not radioactive and unlike radionuc ...

Believed to decay by β⁺β⁺ to ¹¹²Cd , 0+ , 0.0097(1) , , -id=Tin-113 , ¹¹³Sn , style="text-align:right" , 50 , style="text-align:right" , 63 , 112.9051759(17) , 115.08(4) d , β⁺ , ¹¹³In , 1/2+ , , , -id=Tin-113m , rowspan=2 style="text-indent:1em" , ^113mSn , rowspan=2 colspan="3" style="text-indent:2em" , 77.389(19) keV , rowspan=2, 21.4(4) min , IT (91.1%) , ¹¹³Sn , rowspan=2, 7/2+ , rowspan=2, , rowspan=2, , - , β⁺ (8.9%) , ¹¹³In , -id=Tin-114 , ¹¹⁴Sn , style="text-align:right" , 50 , style="text-align:right" , 64 , 113.90278013(3) , colspan=3 align=center, Stable , 0+ , 0.0066(1) , , -id=Tin-114m , style="text-indent:1em" , ^114mSn , colspan="3" style="text-indent:2em" , 3087.37(7) keV , 733(14) ns , IT , ¹¹⁴Sn , 7− , , , -id=Tin-115 , ¹¹⁵Sn , style="text-align:right" , 50 , style="text-align:right" , 65 , 114.903344695(16) , colspan=3 align=center, Stable , 1/2+ , 0.0034(1) , , -id=Tin-115m1 , style="text-indent:1em" , ^115m1Sn , colspan="3" style="text-indent:2em" , 612.81(4) keV , 3.26(8) μs , IT , ¹¹⁵Sn , 7/2+ , , , -id=Tin-115m2 , style="text-indent:1em" , ^115m2Sn , colspan="3" style="text-indent:2em" , 713.64(12) keV , 159(1) μs , IT , ¹¹⁵Sn , 11/2− , , , -id=Tin-116 , ¹¹⁶Sn , style="text-align:right" , 50 , style="text-align:right" , 66 , 115.90174283(10) , colspan=3 align=center, Stable , 0+ , 0.1454(9) , , -id=Tin-116m1 , style="text-indent:1em" , ^116m1Sn , colspan="3" style="text-indent:2em" , 2365.975(21) keV , 348(19) ns , IT , ¹¹⁶Sn , 5− , , , -id=Tin-116m2 , style="text-indent:1em" , ^116m2Sn , colspan="3" style="text-indent:2em" , 3547.16(17) keV , 833(30) ns , IT , ¹¹⁶Sn , 10+ , , , -id=Tin-117 , ¹¹⁷Sn

Fission product Nuclear fission products are the atomic fragments left after a large atomic nucleus undergoes nuclear fission. Typically, a large nucleus like that of uranium fissions by splitting into two smaller nuclei, along with a few neutrons, the releas ...

, style="text-align:right" , 50 , style="text-align:right" , 67 , 116.90295404(52) , colspan=3 align=center, Stable , 1/2+ , 0.0768(7) , , -id=Tin-117m1 , style="text-indent:1em" , ^117m1Sn , colspan="3" style="text-indent:2em" , 314.58(4) keV , 13.939(24) d , IT , ¹¹⁷Sn , 11/2− , , , -id=Tin-117m2 , style="text-indent:1em" , ^117m2Sn , colspan="3" style="text-indent:2em" , 2406.4(4) keV , 1.75(7) μs , IT , ¹¹⁷Sn , (19/2+) , , , -id=Tin-118 , ¹¹⁸Sn , style="text-align:right" , 50 , style="text-align:right" , 68 , 117.90160663(54) , colspan=3 align=center, Stable , 0+ , 0.2422(9) , , -id=Tin-118m1 , style="text-indent:1em" , ^118m1Sn , colspan="3" style="text-indent:2em" , 2574.91(4) keV , 230(10) ns , IT , ¹¹⁸Sn , 7− , , , -id=Tin-118m2 , style="text-indent:1em" , ^118m2Sn , colspan="3" style="text-indent:2em" , 3108.06(22) keV , 2.52(6) μs , IT , ¹¹⁸Sn , (10+) , , , -id=Tin-119 , ¹¹⁹Sn , style="text-align:right" , 50 , style="text-align:right" , 69 , 118.90331127(78) , colspan=3 align=center, Stable , 1/2+ , 0.0859(4) , , -id=Tin-119m1 , style="text-indent:1em" , ^119m1Sn , colspan="3" style="text-indent:2em" , 89.531(13) keV , 293.1(7) d , IT , ¹¹⁹Sn , 11/2− , , , -id=Tin-119m2 , style="text-indent:1em" , ^119m2Sn , colspan="3" style="text-indent:2em" , 2127.0(10) keV , 9.6(12) μs , IT , ¹¹⁹Sn , (19/2+) , , , -id=Tin-119m3 , style="text-indent:1em" , ^119m3Sn , colspan="3" style="text-indent:2em" , 2369.0(3) keV , 96(9) ns , IT , ¹¹⁹Sn , 23/2+ , , , -id=Tin-120 , ¹²⁰Sn , style="text-align:right" , 50 , style="text-align:right" , 70 , 119.90220256(99) , colspan=3 align=center, Stable , 0+ , 0.3258(9) , , -id=Tin-120m1 , style="text-indent:1em" , ^120m1Sn , colspan="3" style="text-indent:2em" , 2481.63(6) keV , 11.8(5) μs , IT , ¹²⁰Sn , 7− , , , -id=Tin-120m2 , style="text-indent:1em" , ^120m2Sn , colspan="3" style="text-indent:2em" , 2902.22(22) keV , 6.26(11) μs , IT , ¹²⁰Sn , 10+ , , , -id=Tin-121 , ¹²¹Sn , style="text-align:right" , 50 , style="text-align:right" , 71 , 120.9042435(11) , 27.03(4) h , β⁻ , ¹²¹Sb , 3/2+ , , , -id=Tin-121m1 , rowspan=2 style="text-indent:1em" , ^121m1Sn , rowspan=2 colspan="3" style="text-indent:2em" , 6.31(6) keV , rowspan=2, 43.9(5) y , IT (77.6%) , ¹²¹Sn , rowspan=2, 11/2− , rowspan=2, , rowspan=2, , - , β⁻ (22.4%) , ¹²¹Sb , -id=Tin-121m2 , style="text-indent:1em" , ^121m2Sn , colspan="3" style="text-indent:2em" , 1998.68(13) keV , 5.3(5) μs , IT , ¹²¹Sn , 19/2+ , , , -id=Tin-121m3 , style="text-indent:1em" , ^121m3Sn , colspan="3" style="text-indent:2em" , 2222.0(2) keV , 520(50) ns , IT , ¹²¹Sn , 23/2+ , , , -id=Tin-121m4 , style="text-indent:1em" , ^121m4Sn , colspan="3" style="text-indent:2em" , 2833.9(2) keV , 167(25) ns , IT , ¹²¹Sn , 27/2− , , , -id=Tin-122 , ¹²²Sn , style="text-align:right" , 50 , style="text-align:right" , 72 , 121.9034455(26) , colspan=3 align=center, Observationally StableBelieved to undergo β⁻β⁻ decay to ¹²²Te , 0+ , 0.0463(3) , , -id=Tin-122m1 , style="text-indent:1em" , ^122m1Sn , colspan="3" style="text-indent:2em" , 2409.03(4) keV , 7.5(9) μs , IT , ¹²²Sn , 7− , , , -id=Tin-122m2 , style="text-indent:1em" , ^122m2Sn , colspan="3" style="text-indent:2em" , 2765.5(3) keV , 62(3) μs , IT , ¹²²Sn , 10+ , , , -id=Tin-122m3 , style="text-indent:1em" , ^122m3Sn , colspan="3" style="text-indent:2em" , 4721.2(3) keV , 139(9) ns , IT , ¹²²Sn , 15− , , , -id=Tin-123 , ¹²³Sn , style="text-align:right" , 50 , style="text-align:right" , 73 , 122.9057271(27) , 129.2(4) d , β⁻ , ¹²³Sb , 11/2− , , , -id=Tin-123m1 , style="text-indent:1em" , ^123m1Sn , colspan="3" style="text-indent:2em" , 24.6(4) keV , 40.06(1) min , β⁻ , ¹²³Sb , 3/2+ , , , -id=Tin-123m2 , style="text-indent:1em" , ^123m2Sn , colspan="3" style="text-indent:2em" , 1944.90(12) keV , 7.4(26) μs , IT , ¹²³Sn , 19/2+ , , , -id=Tin-123m3 , style="text-indent:1em" , ^123m3Sn , colspan="3" style="text-indent:2em" , 2152.66(19) keV , 6 μs , IT , ¹²³Sn , 23/2+ , , , -id=Tin-123m4 , style="text-indent:1em" , ^123m4Sn , colspan="3" style="text-indent:2em" , 2712.47(21) keV , 34 μs , IT , ¹²³Sn , 27/2− , , , -id=Tin-124 , ¹²⁴Sn , style="text-align:right" , 50 , style="text-align:right" , 74 , 123.9052796(14) , colspan=3 align=center, Observationally StableBelieved to undergo β⁻β⁻ decay to ¹²⁴Te with a half-life over 1×10¹⁷ years , 0+ , 0.0579(5) , , -id=Tin-124m1 , style="text-indent:1em" , ^124m1Sn , colspan="3" style="text-indent:2em" , 2204.620(23) keV , 270(60) ns , IT , ¹²⁴Sn , 5- , , , -id=Tin-124m2 , style="text-indent:1em" , ^124m2Sn , colspan="3" style="text-indent:2em" , 2324.96(4) keV , 3.1(5) μs , IT , ¹²⁴Sn , 7− , , , -id=Tin-124m3 , style="text-indent:1em" , ^124m3Sn , colspan="3" style="text-indent:2em" , 2656.6(3) keV , 51(3) μs , IT , ¹²⁴Sn , 10+ , , , -id=Tin-124m4 , style="text-indent:1em" , ^124m4Sn , colspan="3" style="text-indent:2em" , 4552.4(3) keV , 260(25) ns , IT , ¹²⁴Sn , 15− , , , -id=Tin-125 , ¹²⁵Sn , style="text-align:right" , 50 , style="text-align:right" , 75 , 124.9077894(14) , 9.634(15) d , β⁻ , ¹²⁵Sb , 11/2− , , , -id=Tin-125m1 , style="text-indent:1em" , ^125m1Sn , colspan="3" style="text-indent:2em" , 27.50(14) keV , 9.77(25) min , β⁻ , ¹²⁵Sb , 3/2+ , , , -id=Tin-125m2 , style="text-indent:1em" , ^125m2Sn , colspan="3" style="text-indent:2em" , 1892.8(3) keV , 6.2(2) μs , IT , ¹²⁵Sn , 19/2+ , , , -id=Tin-125m3 , style="text-indent:1em" , ^125m3Sn , colspan="3" style="text-indent:2em" , 2059.5(4) keV , 650(60) ns , IT , ¹²⁵Sn , 23/2+ , , , -id=Tin-125m4 , style="text-indent:1em" , ^125m4Sn , colspan="3" style="text-indent:2em" , 2623.5(5) keV , 230(17) ns , IT , ¹²⁵Sn , 27/2− , , , - , ¹²⁶Sn

Long-lived fission product Long-lived fission products (LLFPs) are radioactive materials with a long half-life (more than 200,000 years) produced by nuclear fission of uranium and plutonium. Because of their persistent radiotoxicity, it is necessary to isolate them from hum ...

, style="text-align:right" , 50 , style="text-align:right" , 76 , 125.907658(11) , 2.30(14)×10⁵ y , β⁻ , ¹²⁶Sb , 0+ , < 10⁻¹⁴ , , -id=Tin-126m1 , style="text-indent:1em" , ^126m1Sn , colspan="3" style="text-indent:2em" , 2218.99(8) keV , 6.1(7) μs , IT , ¹²⁶Sn , 7− , , , -id=Tin-126m2 , style="text-indent:1em" , ^126m2Sn , colspan="3" style="text-indent:2em" , 2564.5(5) keV , 7.6(3) μs , IT , ¹²⁶Sn , 10+ , , , -id=Tin-126m3 , style="text-indent:1em" , ^126m3Sn , colspan="3" style="text-indent:2em" , 4347.4(4) keV , 114(2) ns , IT , ¹²⁶Sn , 15− , , , -id=Tin-127 , ¹²⁷Sn , style="text-align:right" , 50 , style="text-align:right" , 77 , 126.9103917(99) , 2.10(4) h , β⁻ , ¹²⁷Sb , 11/2− , , , -id=Tin-127m1 , style="text-indent:1em" , ^127m1Sn , colspan="3" style="text-indent:2em" , 5.07(6) keV , 4.13(3) min , β⁻ , ¹²⁷Sb , 3/2+ , , , -id=Tin-127m2 , style="text-indent:1em" , ^127m2Sn , colspan="3" style="text-indent:2em" , 1826.67(16) keV , 4.52(15) μs , IT , ¹²⁷Sn , 19/2+ , , , -id=Tin-127m3 , style="text-indent:1em" , ^127m3Sn , colspan="3" style="text-indent:2em" , 1930.97(17) keV , 1.26(15) μs , IT , ¹²⁷Sn , (23/2+) , , , -id=Tin-127m4 , style="text-indent:1em" , ^127m4Sn , colspan="3" style="text-indent:2em" , 2552.4(10) keV , 250 (30) ns , IT , ¹²⁷Sn , (27/2−) , , , -id=Tin-128 , ¹²⁸Sn , style="text-align:right" , 50 , style="text-align:right" , 78 , 127.910508(19) , 59.07(14) min , β⁻ , ¹²⁸Sb , 0+ , , , -id=Tin-128m1 , style="text-indent:1em" , ^128m1Sn , colspan="3" style="text-indent:2em" , 2091.50(11) keV , 6.5(5) s , IT , ¹²⁸Sn , 7− , , , -id=Tin-128m2 , style="text-indent:1em" , ^128m2Sn , colspan="3" style="text-indent:2em" , 2491.91(17) keV , 2.91(14) μs , IT , ¹²⁸Sn , 10+ , , , -id=Tin-128m3 , style="text-indent:1em" , ^128m3Sn , colspan="3" style="text-indent:2em" , 4099.5(4) keV , 220(30) ns , IT , ¹²⁸Sn , (15−) , , , -id=Tin-129 , ¹²⁹Sn , style="text-align:right" , 50 , style="text-align:right" , 79 , 128.913482(19) , 2.23(4) min , β⁻ , ¹²⁹Sb , 3/2+ , , , -id=Tin-129m1 , style="text-indent:1em" , ^129m1Sn , colspan="3" style="text-indent:2em" , 35.15(5) keV , 6.9(1) min , β⁻ , ¹²⁹Sb , 11/2− , , , -id=Tin-129m2 , style="text-indent:1em" , ^129m2Sn , colspan="3" style="text-indent:2em" , 1761.6(10) keV , 3.49(11) μs , IT , ¹²⁹Sn , (19/2+) , , , -id=Tin-129m3 , style="text-indent:1em" , ^129m3Sn , colspan="3" style="text-indent:2em" , 1802.6(10) keV , 2.22(13) μs , IT , ¹²⁹Sn , 23/2+ , , , -id=Tin-129m4 , style="text-indent:1em" , ^129m4Sn , colspan="3" style="text-indent:2em" , 2552.9(11) keV , 221(18) ns , IT , ¹²⁹Sn , (27/2−) , , , -id=Tin-130 , ¹³⁰Sn , style="text-align:right" , 50 , style="text-align:right" , 80 , 129.9139745(20) , 3.72(7) min , β⁻ , ¹³⁰Sb , 0+ , , , -id=Tin-130m1 , style="text-indent:1em" , ^130m1Sn , colspan="3" style="text-indent:2em" , 1946.88(10) keV , 1.7(1) min , β⁻ , ¹³⁰Sb , 7− , , , -id=Tin-130m2 , style="text-indent:1em" , ^130m2Sn , colspan="3" style="text-indent:2em" , 2434.79(12) keV , 1.501(17) μs , IT , ¹³⁰Sn , (10+) , , , -id=Tin-131 , ¹³¹Sn , style="text-align:right" , 50 , style="text-align:right" , 81 , 130.917053(4) , 56.0(5) s , β⁻ , ¹³¹Sb , 3/2+ , , , -id=Tin-131m1 , rowspan=2 style="text-indent:1em" , ^131m1Sn , rowspan=2 colspan="3" style="text-indent:2em" , 65.1(3) keV , rowspan=2, 58.4(5) s , β⁻ , ¹³¹Sb , rowspan=2, 11/2− , rowspan=2, , rowspan=2, , - , IT? , ¹³¹Sn , -id=Tin-131m2 , style="text-indent:1em" , ^131m2Sn , colspan="3" style="text-indent:2em" , 4670.0(4) keV , 316(5) ns , IT , ¹³¹Sn , (23/2−) , , , -id=Tin-132 , ¹³²Sn , style="text-align:right" , 50 , style="text-align:right" , 82 , 131.9178239(21) , 39.7(8) s , β⁻ , ¹³²Sb , 0+ , , , -id=Tin-132m , style="text-indent:1em" , ^132mSn , colspan="3" style="text-indent:2em" , 4848.52(20) keV , 2.080(16) μs , IT , ¹³²Sn , 8+ , , , -id=Tin-133 , rowspan=2, ¹³³Sn , rowspan=2 style="text-align:right" , 50 , rowspan=2 style="text-align:right" , 83 , rowspan=2, 132.9239138(20) , rowspan=2, 1.37(7) s , β⁻ (99.97%) , ¹³³Sb , rowspan=2, 7/2− , rowspan=2, , rowspan=2, , - , β⁻ n (.0294%) , ¹³²Sb , -id=Tin-134 , rowspan=2, ¹³⁴Sn , rowspan=2 style="text-align:right" , 50 , rowspan=2 style="text-align:right" , 84 , rowspan=2, 133.928680(3) , rowspan=2, 0.93(8) s , β⁻ (83%) , ¹³⁴Sb , rowspan=2, 0+ , rowspan=2, , rowspan=2, , - , β⁻n (17%) , ¹³³Sb , -id=Tin-134m , style="text-indent:1em" , ^134mSn , colspan="3" style="text-indent:2em" , 1247.4(5) keV , 87(8) ns , IT , ¹³⁴Sn , 6+ , , , -id=Tin-135 , rowspan=3, ¹³⁵Sn , rowspan=3 style="text-align:right" , 50 , rowspan=3 style="text-align:right" , 85 , rowspan=3, 134.934909(3) , rowspan=3, 515(5) ms , β⁻ (79%) , ¹³⁵Sb , rowspan=3, 7/2−# , rowspan=3, , rowspan=3, , - , β⁻n (21%) , ¹³⁴Sb , - , β⁻2n? , ¹³³Sb , -id=Tin-136 , rowspan=3, ¹³⁶Sn , rowspan=3 style="text-align:right" , 50 , rowspan=3 style="text-align:right" , 86 , rowspan=3, 135.93970(22)# , rowspan=3, 355(18) ms , β⁻ (72%) , ¹³⁶Sb , rowspan=3, 0+ , rowspan=3, , rowspan=3, , - , β⁻n (28%) , ¹³⁵Sb , - , β⁻2n? , ¹³⁴Sb , -id=Tin-137 , rowspan=3, ¹³⁷Sn , rowspan=3 style="text-align:right" , 50 , rowspan=3 style="text-align:right" , 87 , rowspan=3, 136.94616(32)# , rowspan=3, 249(15) ms , β⁻ (52%) , ¹³⁷Sb , rowspan=3, 5/2−# , rowspan=3, , rowspan=3, , - , β⁻n (48%) , ¹³⁶Sb , - , β⁻2n? , ¹³⁵Sb , -id=Tin-138 , rowspan=3, ¹³⁸Sn , rowspan=3 style="text-align:right" , 50 , rowspan=3 style="text-align:right" , 88 , rowspan=3, 137.95114(43)# , rowspan=3, 148(9) ms , β⁻ (64%) , ¹³⁸Sb , rowspan=3, 0+ , rowspan=3, , rowspan=3, , - , β⁻n (36%) , ¹³⁷Sb , - , β⁻2n? , ¹³⁶Sb , -id=Tin-138m , style="text-indent:1em" , ^138mSn , colspan="3" style="text-indent:2em" , 1344(2) keV , 210(45) ns , IT , ¹³⁸Sn , (6+) , , , -id=Tin-139 , rowspan=3, ¹³⁹Sn , rowspan=3 style="text-align:right" , 50 , rowspan=3 style="text-align:right" , 89 , rowspan=3, 138.95780(43)# , rowspan=3, 120(38) ms , β⁻ , ¹³⁹Sb , rowspan=3, 5/2−# , rowspan=3, , rowspan=3, , - , β⁻n? , ¹³⁸Sb , - , β⁻2n? , ¹³⁷Sb , -id=Tin-140 , rowspan=3, ¹⁴⁰Sn , rowspan=3 style="text-align:right" , 50 , rowspan=3 style="text-align:right" , 90 , rowspan=3, 139.96297(32)# , rowspan=3, 50# ms
550 ns, β⁻? , ¹⁴⁰Sb , rowspan=3, 0+ , rowspan=3, , rowspan=3, , - , β⁻n? , ¹³⁹Sb , - , β⁻2n? , ¹³⁸Sb

Tin-117m

Tin-117m is a radioisotope of tin. One of its uses is in a particulate suspension to treat canine synovitis (radiosynoviorthesis).

Tin-121m

Tin-121m (^121mSn) is a radioisotope and

nuclear isomer A nuclear isomer is a metastable state of an atomic nucleus, in which one or more nucleons (protons or neutrons) occupy excited state levels (higher energy levels). "Metastable" describes nuclei whose excited states have Half-life, half-lives of ...

of tin with a

half-life Half-life is a mathematical and scientific description of exponential or gradual decay. Half-life, half life or halflife may also refer to: Film * Half-Life (film), ''Half-Life'' (film), a 2008 independent film by Jennifer Phang * ''Half Life: ...

of 43.9 years. In a normal

thermal reactor A thermal-neutron reactor is a nuclear reactor that uses slow or thermal neutrons. ("Thermal" does not mean hot in an absolute sense, but means in thermal equilibrium with the medium it is interacting with, the reactor's fuel, moderator and stru ...

, it has a very low

fission product yield Nuclear fission splits a heavy nucleus such as uranium or plutonium into two lighter nuclei, which are called fission products. Yield refers to the fraction of a fission product produced per fission. Yield can be broken down by: # Individual i ...

; thus, this isotope is not a significant contributor to

nuclear waste Radioactive waste is a type of hazardous waste that contains radioactive material. It is a result of many activities, including nuclear medicine, nuclear research, nuclear power generation, nuclear decommissioning, rare-earth mining, and nuclear ...

Fast fission Fast fission is fission that occurs when a heavy atom absorbs a high-energy neutron, called a fast neutron, and splits. Most fissionable materials need thermal neutrons, which move more slowly. Fast reactors vs. thermal reactors Fast neutron r ...

or fission of some heavier

actinides The actinide () or actinoid () series encompasses at least the 14 metallic chemical elements in the 5f series, with atomic numbers from 89 to 102, actinium through nobelium. Number 103, lawrencium, is also generally included despite being part ...

will produce tin-121 at higher yields. For example, its yield from uranium-235 is 0.0007% per thermal fission and 0.002% per fast fission.M. B. Chadwick et al, "Evaluated Nuclear Data File (ENDF) : ENDF/B-VII.1: Nuclear Data for Science and Technology: Cross Sections, Covariances, Fission Product Yields, and Decay Data", Nucl. Data Sheets 112(2011)2887. (accessed at https://www-nds.iaea.org/exfor/endf.htm)

Tin-126

Tin-126 is a

radioisotope A radionuclide (radioactive nuclide, radioisotope or radioactive isotope) is a nuclide that has excess numbers of either neutrons or protons, giving it excess nuclear energy, and making it unstable. This excess energy can be used in one of three ...

of tin and one of the only seven

long-lived fission product Long-lived fission products (LLFPs) are radioactive materials with a long half-life (more than 200,000 years) produced by nuclear fission of uranium and plutonium. Because of their persistent radiotoxicity, it is necessary to isolate them from hum ...

s of uranium and plutonium. While tin-126's

of 230,000 years translates to a low

specific activity Specific activity (symbol ''a'') is the activity per unit mass of a radionuclide and is a physical property of that radionuclide. It is usually given in units of becquerel per kilogram (Bq/kg), but another commonly used unit of specific activi ...

of gamma radiation, its short-lived

decay product In nuclear physics, a decay product (also known as a daughter product, daughter isotope, radio-daughter, or daughter nuclide) is the remaining nuclide left over from radioactive decay. Radioactive decay often proceeds via a sequence of steps ( d ...

s, two

isomers In chemistry, isomers are molecules or polyatomic ions with identical molecular formula – that is, the same number of atoms of each element – but distinct arrangements of atoms in space. ''Isomerism'' refers to the existence or possibili ...

of antimony-126, emit a cascade of hard

gamma radiation A gamma ray, also known as gamma radiation (symbol ), is a penetrating form of electromagnetic radiation arising from high energy interactions like the radioactive decay of atomic nuclei or astronomical events like solar flares. It consists o ...

- at least 3 photons over 400 keV per decay - before reaching stable tellurium-126, making external exposure to tin-126 a potential concern. Tin-126 is in the middle of the mass range for fission products. Thermal reactors, which make up almost all current

nuclear power plant A nuclear power plant (NPP), also known as a nuclear power station (NPS), nuclear generating station (NGS) or atomic power station (APS) is a thermal power station in which the heat source is a nuclear reactor. As is typical of thermal power st ...

s, produce it at only low yield, since

slow neutron The neutron detection temperature, also called the neutron energy, indicates a free neutron's kinetic energy, usually given in electron volts. The term ''temperature'' is used, since hot, thermal and cold neutrons are moderated in a medium with ...

s almost always fission ²³⁵U or ²³⁹Pu into unequal halves. Fast fission in a

fast reactor A fast-neutron reactor (FNR) or fast-spectrum reactor or simply a fast reactor is a category of nuclear reactor in which the fission chain reaction is sustained by fast neutrons (carrying energies above 1 MeV, on average), as opposed to slow t ...

nuclear weapon A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission (fission or atomic bomb) or a combination of fission and fusion reactions (thermonuclear weapon), producing a nuclear exp ...

, or fission of some heavy

minor actinide Minor may refer to: Common meanings * Minor (law), a person not under the age of certain legal activities. * Academic minor, a secondary field of study in undergraduate education Mathematics * Minor (graph theory), a relation of one graph to ...

s such as

californium Californium is a synthetic chemical element; it has symbol Cf and atomic number 98. It was first synthesized in 1950 at Lawrence Berkeley National Laboratory (then the University of California Radiation Laboratory) by bombarding curium with al ...

, will produce it at higher yields.
ANL factsheet

References

* Isotope masses from: ** * Isotopic compositions and standard atomic masses from: ** ** * Half-life, spin, and isomer data selected from: ** ** ** {{Navbox element isotopes Tin

List of isotopes

Tin-117m

Tin-121m

Tin-126

See also

References