Physics:Isotopes of antimony
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Short description: Nuclides with atomic number of 51 but with different mass numbers
Antimony (51Sb) occurs in two stable isotopes, 121Sb and 123Sb. There are 35 artificial radioactive isotopes, the longest-lived of which are 125Sb, with a half-life of 2.75856 years; 124Sb, with a half-life of 60.2 days; and 126Sb, with a half-life of 12.35 days. All other isotopes have half-lives less than 4 days, most less than an hour.
There are also many isomers, the longest-lived of which is 120m1Sb with a half-life of 5.76 days.
With the exception of beryllium, antimony is the lightest element observed to have isotopes capable of undergoing alpha decay, with the isotope 104Sb being seen to undergo this mode of decay. Some lighter elements, namely those in the vicinity of 8Be, have isotopes with delayed alpha emission (following proton or beta emission) as a rare branch.
List of isotopes
Template:Anchor (or Anchors): too many anchors, maximum is ten
| Nuclide [n 1] |
Z | N | Isotopic mass (u) [n 2][n 3] |
Half-life |
Decay mode [n 4] |
Daughter isotope [n 5][n 6] |
Spin and parity [n 7][n 8] |
Physics:Natural abundance (mole fraction) | |
|---|---|---|---|---|---|---|---|---|---|
| Excitation energy[n 8] | Normal proportion | Range of variation | |||||||
| 103Sb | 51 | 52 | 102.93969(32)# | 100# ms [>1.5 µs] | β+ | 103Sn | 5/2+# | ||
| 104Sb | 51 | 53 | 103.93647(39)# | 0.47(13) s [0.44(+15−11) s] |
β+ (86%) | 104Sn | |||
| p (7%) | 103Sn | ||||||||
| β+, p (7%) | 103In | ||||||||
| α (<1%) | 100In | ||||||||
| 105Sb | 51 | 54 | 104.93149(11) | 1.12(16) s | β+ (99%) | 105Sn | (5/2+) | ||
| p (1%) | 104Sn | ||||||||
| β+, p (<1%) | 104In | ||||||||
| 106Sb | 51 | 55 | 105.92879(34)# | 0.6(2) s | β+ | 106Sn | (4+) | ||
| 106mSb | 1000(500)# keV | 220(20) ns | |||||||
| 107Sb | 51 | 56 | 106.92415(32)# | 4.0(2) s | β+ | 107Sn | 5/2+# | ||
| 108Sb | 51 | 57 | 107.92216(22)# | 7.4(3) s | β+ | 108Sn | (4+) | ||
| β+, p (rare) | 107In | ||||||||
| 109Sb | 51 | 58 | 108.918132(20) | 17.3(5) s | β+ | 109Sn | 5/2+# | ||
| 110Sb | 51 | 59 | 109.91675(22)# | 23.0(4) s | β+ | 110Sn | (4+) | ||
| 111Sb | 51 | 60 | 110.91316(3) | 75(1) s | β+ | 111Sn | (5/2+) | ||
| 112Sb | 51 | 61 | 111.912398(19) | 51.4(10) s | β+ | 112Sn | 3+ | ||
| 113Sb | 51 | 62 | 112.909372(19) | 6.67(7) min | β+ | 113Sn | 5/2+ | ||
| 114Sb | 51 | 63 | 113.90927(3) | 3.49(3) min | β+ | 114Sn | (3+) | ||
| 114mSb | 495.5(7) keV | 219(12) µs | (8−) | ||||||
| 115Sb | 51 | 64 | 114.906598(17) | 32.1(3) min | β+ | 115Sn | 5/2+ | ||
| 116Sb | 51 | 65 | 115.906794(6) | 15.8(8) min | β+ | 116Sn | 3+ | ||
| 116m1Sb | 93.99(5) keV | 194(4) ns | 1+ | ||||||
| 116m2Sb | 380(40) keV | 60.3(6) min | β+ | 116Sn | 8− | ||||
| 117Sb | 51 | 66 | 116.904836(10) | 2.80(1) h | β+ | 117Sn | 5/2+ | ||
| 118Sb | 51 | 67 | 117.905529(4) | 3.6(1) min | β+ | 118Sn | 1+ | ||
| 118m1Sb | 50.814(21) keV | 20.6(6) µs | (3)+ | ||||||
| 118m2Sb | 250(6) keV | 5.00(2) h | β+ | 118Sn | 8− | ||||
| 119Sb | 51 | 68 | 118.903942(9) | 38.19(22) h | EC | 119Sn | 5/2+ | ||
| 119m1Sb | 2553.6(3) keV | 130(3) ns | (19/2−) | ||||||
| 119m2Sb | 2852(7) keV | 850(90) ms | IT | 119Sb | 27/2+# | ||||
| 120Sb | 51 | 69 | 119.905072(8) | 15.89(4) min | β+ | 120Sn | 1+ | ||
| 120m1Sb | 0(100)# keV | 5.76(2) d | β+ | 120Sn | 8− | ||||
| 120m2Sb | 78.16(5) keV | 246(2) ns | (3+) | ||||||
| 120m3Sb | 2328.3(6) keV | 400(8) ns | (6) | ||||||
| 121Sb[n 9] | 51 | 70 | 120.9038157(24) | Stable | 5/2+ | 0.5721(5) | |||
| 122Sb | 51 | 71 | 121.9051737(24) | 2.7238(2) d | β− (97.59%) | 122Te | 2− | ||
| β+ (2.41%) | 122Sn | ||||||||
| 122m1Sb | 61.4131(5) keV | 1.86(8) µs | 3+ | ||||||
| 122m2Sb | 137.4726(8) keV | 0.53(3) ms | (5)+ | ||||||
| 122m3Sb | 163.5591(17) keV | 4.191(3) min | IT | 122Sb | (8)− | ||||
| 123Sb[n 9] | 51 | 72 | 122.9042140(22) | Stable | 7/2+ | 0.4279(5) | |||
| 124Sb | 51 | 73 | 123.9059357(22) | 60.20(3) d | β− | 124Te | 3− | ||
| 124m1Sb | 10.8627(8) keV | 93(5) s | IT (75%) | 124Sb | 5+ | ||||
| β− (25%) | 124Te | ||||||||
| 124m2Sb | 36.8440(14) keV | 20.2(2) min | (8)− | ||||||
| 124m3Sb | 40.8038(7) keV | 3.2(3) µs | (3+, 4+) | ||||||
| 125Sb | 51 | 74 | 124.9052538(28) | 2.75856(25) y | β− | 125mTe | 7/2+ | ||
| 126Sb | 51 | 75 | 125.90725(3) | 12.35(6) d | β− | 126Te | (8−) | ||
| 126m1Sb | 17.7(3) keV | 19.15(8) min | β− (86%) | 126Te | (5+) | ||||
| IT (14%) | 126Sb | ||||||||
| 126m2Sb | 40.4(3) keV | ~11 s | IT | 126m1Sb | (3−) | ||||
| 126m3Sb | 104.6(3) keV | 553(5) ns | (3+) | ||||||
| 127Sb | 51 | 76 | 126.906924(6) | 3.85(5) d | β− | 127mTe | 7/2+ | ||
| 128Sb | 51 | 77 | 127.909169(27) | 9.01(4) h | β− | 128Te | 8− | ||
| 128mSb | 10(7) keV | 10.4(2) min | β− (96.4%) | 128Te | 5+ | ||||
| IT (3.6%) | 128Sb | ||||||||
| 129Sb | 51 | 78 | 128.909148(23) | 4.40(1) h | β− | 129mTe | 7/2+ | ||
| 129m1Sb | 1851.05(10) keV | 17.7(1) min | β− (85%) | 129Te | (19/2−) | ||||
| IT (15%) | 129Sb | ||||||||
| 129m2Sb | 1860.90(10) keV | >2 µs | (15/2−) | ||||||
| 129m3Sb | 2138.9(5) keV | 1.1(1) µs | (23/2+) | ||||||
| 130Sb | 51 | 79 | 129.911656(18) | 39.5(8) min | β− | 130Te | (8−)# | ||
| 130mSb | 4.80(20) keV | 6.3(2) min | β− | 130Te | (4, 5)+ | ||||
| 131Sb | 51 | 80 | 130.911982(22) | 23.03(4) min | β− | 131mTe | (7/2+) | ||
| 132Sb | 51 | 81 | 131.914467(15) | 2.79(5) min | β− | 132Te | (4+) | ||
| 132m1Sb | 200(30) keV | 4.15(5) min | β− | 132Te | (8−) | ||||
| 132m2Sb | 254.5(3) keV | 102(4) ns | (6−) | ||||||
| 133Sb | 51 | 82 | 132.915252(27) | 2.5(1) min | β− | 133mTe | (7/2+) | ||
| 134Sb | 51 | 83 | 133.92038(5) | 0.78(6) s | β− | 134Te | (0-) | ||
| 134mSb | 80(110) keV | 10.07(5) s | β− (99.9%) | 134Te | (7−) | ||||
| β−, n (.091%) | 133Te | ||||||||
| 135Sb | 51 | 84 | 134.92517(11) | 1.68(2) s | β− (82.4%) | 135Te | (7/2+) | ||
| β−, n (17.6%) | 134Te | ||||||||
| 136Sb | 51 | 85 | 135.93035(32)# | 0.923(14) s | β− (83%) | 136Te | 1−# | ||
| β−, n (17%) | 135Te | ||||||||
| 136mSb | 173(3) keV | 570(50) ns | 6−# | ||||||
| 137Sb | 51 | 86 | 136.93531(43)# | 450(50) ms | β− | 137Te | 7/2+# | ||
| β−, n | 136Te | ||||||||
| 138Sb | 51 | 87 | 137.94079(32)# | 500# ms [>300 ns] | β− | 138Te | 2−# | ||
| β−, n | 137Te | ||||||||
| 139Sb | 51 | 88 | 138.94598(54)# | 300# ms [>300 ns] | β− | 139Te | 7/2+# | ||
- ↑ mSb – Excited nuclear 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).
- ↑
Modes of decay:
EC: Electron capture IT: Isomeric transition n: Neutron emission 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.
- ↑ 8.0 8.1 # – Values marked # are not purely derived from experimental data, but at least partly from trends of neighboring nuclides (TNN).
- ↑ 9.0 9.1 Fission product
See also
References
- 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, doi:10.1016/j.nuclphysa.2003.11.001, Bibcode: 2003NuPhA.729....3A, https://hal.archives-ouvertes.fr/in2p3-00020241/document
- Isotopic compositions and standard atomic masses from:
- 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.
- 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, doi:10.1016/j.nuclphysa.2003.11.001, Bibcode: 2003NuPhA.729....3A, https://hal.archives-ouvertes.fr/in2p3-00020241/document
- National Nuclear Data Center. "NuDat 2.x database". Brookhaven National Laboratory. http://www.nndc.bnl.gov/nudat2/.
- Lide, David R., ed (2004). "11. Table of the Isotopes". CRC Handbook of Chemistry and Physics (85th ed.). Boca Raton, Florida: CRC Press. ISBN 978-0-8493-0485-9.
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