Isotopes of antimony
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.
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Standard atomic weight Ar, standard(Sb) |
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There are also many isomers, the longest-lived of which is 120m1Sb with a half-life of 5.76 days.
List of isotopes
Nuclide [n 1] |
Z | N | Isotopic mass (Da) [n 2][n 3] |
Half-life |
Decay mode [n 4] |
Daughter isotope [n 5][n 6] |
Spin and parity [n 7][n 8] |
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.
- # – Values marked # are not purely derived from experimental data, but at least partly from trends of neighboring nuclides (TNN).
- Fission product
See also
References
- Meija, Juris; et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry. 88 (3): 265–91. doi:10.1515/pac-2015-0305.
- 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. Lay summary.
- 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.
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