Antimon (51Sb) yang terbentuk secara alami terdiri dari dua isotop stabil, 121Sb dan 123Sb. Ada 35 isotop radioaktif buatan, yang paling lama berumur 125Sb, dengan waktu paruh 2,75856 tahun; 124Sb, dengan waktu paruh 60,2 hari; dan 126Sb, dengan waktu paruh 12,35 hari. Semua isotop lain memiliki waktu paruh kurang dari 4 hari, kebanyakan kurang dari satu jam. Unsur ini juga memiliki banyak isomer, yang berumur paling panjang adalah 120m1Sb dengan waktu paruh 5,76 hari.
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Berat atom standar Ar°(Sb) |
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Daftar isotop
Nuklida [n 1] |
Z | N | Massa isotop (Da) [n 2][n 3] |
Waktu paruh |
Mode peluruhan [n 4] |
Isotop anak [n 5][n 6] |
Spin dan paritas [n 7][n 8] |
Kelimpahan alami (fraksi mol) | |||||||||||
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Energi eksitasi[n 8] | Proporsi normal | Rentang variasi | |||||||||||||||||
103Sb | 51 | 52 | 102,93969(32)# | 100# mdtk [>1,5 µdtk] | β+ | 103Sn | 5/2+# | ||||||||||||
104Sb | 51 | 53 | 103,93647(39)# | 0,47(13) dtk [0,44(+15−11) dtk] |
β+ (86%) | 104Sn | |||||||||||||
p (7%) | 103Sn | ||||||||||||||||||
β+, p (7%) | 103In | ||||||||||||||||||
α (<1%) | 100In | ||||||||||||||||||
105Sb | 51 | 54 | 104,93149(11) | 1,12(16) dtk | β+ (99%) | 105Sn | (5/2+) | ||||||||||||
p (1%) | 104Sn | ||||||||||||||||||
β+, p (<1%) | 104In | ||||||||||||||||||
106Sb | 51 | 55 | 105,92879(34)# | 0,6(2) dtk | β+ | 106Sn | (4+) | ||||||||||||
106mSb | 1000(500)# keV | 220(20) ndtk | |||||||||||||||||
107Sb | 51 | 56 | 106,92415(32)# | 4,0(2) dtk | β+ | 107Sn | 5/2+# | ||||||||||||
108Sb | 51 | 57 | 107,92216(22)# | 7,4(3) dtk | β+ | 108Sn | (4+) | ||||||||||||
β+, p (langka) | 107In | ||||||||||||||||||
109Sb | 51 | 58 | 108,918132(20) | 17,3(5) dtk | β+ | 109Sn | 5/2+# | ||||||||||||
110Sb | 51 | 59 | 109,91675(22)# | 23,0(4) dtk | β+ | 110Sn | (4+) | ||||||||||||
111Sb | 51 | 60 | 110,91316(3) | 75(1) dtk | β+ | 111Sn | (5/2+) | ||||||||||||
112Sb | 51 | 61 | 111,912398(19) | 51,4(10) dtk | β+ | 112Sn | 3+ | ||||||||||||
113Sb | 51 | 62 | 112,909372(19) | 6,67(7) mnt | β+ | 113Sn | 5/2+ | ||||||||||||
114Sb | 51 | 63 | 113,90927(3) | 3,49(3) mnt | β+ | 114Sn | (3+) | ||||||||||||
114mSb | 495,5(7) keV | 219(12) µdtk | (8−) | ||||||||||||||||
115Sb | 51 | 64 | 114,906598(17) | 32,1(3) mnt | β+ | 115Sn | 5/2+ | ||||||||||||
116Sb | 51 | 65 | 115,906794(6) | 15,8(8) mnt | β+ | 116Sn | 3+ | ||||||||||||
116m1Sb | 93,99(5) keV | 194(4) ndtk | 1+ | ||||||||||||||||
116m2Sb | 380(40) keV | 60,3(6) mnt | β+ | 116Sn | 8− | ||||||||||||||
117Sb | 51 | 66 | 116,904836(10) | 2,80(1) jam | β+ | 117Sn | 5/2+ | ||||||||||||
118Sb | 51 | 67 | 117,905529(4) | 3,6(1) mnt | β+ | 118Sn | 1+ | ||||||||||||
118m1Sb | 50,814(21) keV | 20,6(6) µdtk | (3)+ | ||||||||||||||||
118m2Sb | 250(6) keV | 5,00(2) jam | β+ | 118Sn | 8− | ||||||||||||||
119Sb | 51 | 68 | 118,903942(9) | 38,19(22) jam | EC | 119Sn | 5/2+ | ||||||||||||
119m1Sb | 2553,6(3) keV | 130(3) ndtk | (19/2−) | ||||||||||||||||
119m2Sb | 2852(7) keV | 850(90) mdtk | IT | 119Sb | 27/2+# | ||||||||||||||
120Sb | 51 | 69 | 119,905072(8) | 15,89(4) mnt | β+ | 120Sn | 1+ | ||||||||||||
120m1Sb | 0(100)# keV | 5,76(2) hri | β+ | 120Sn | 8− | ||||||||||||||
120m2Sb | 78,16(5) keV | 246(2) ndtk | (3+) | ||||||||||||||||
120m3Sb | 2328,3(6) keV | 400(8) ndtk | (6) | ||||||||||||||||
121Sb[n 9] | 51 | 70 | 120,9038157(24) | Stabil[n 10] | 5/2+ | 0,5721(5) | |||||||||||||
122Sb | 51 | 71 | 121,9051737(24) | 2,7238(2) hri | β− (97,59%) | 122Te | 2− | ||||||||||||
β+ (2,41%) | 122Sn | ||||||||||||||||||
122m1Sb | 61,4131(5) keV | 1,86(8) µdtk | 3+ | ||||||||||||||||
122m2Sb | 137,4726(8) keV | 0,53(3) mdtk | (5)+ | ||||||||||||||||
122m3Sb | 163,5591(17) keV | 4,191(3) mnt | IT | 122Sb | (8)− | ||||||||||||||
123Sb[n 9] | 51 | 72 | 122,9042140(22) | Stabil[n 10] | 7/2+ | 0,4279(5) | |||||||||||||
124Sb | 51 | 73 | 123,9059357(22) | 60,20(3) hri | β− | 124Te | 3− | ||||||||||||
124m1Sb | 10,8627(8) keV | 93(5) dtk | IT (75%) | 124Sb | 5+ | ||||||||||||||
β− (25%) | 124Te | ||||||||||||||||||
124m2Sb | 36,8440(14) keV | 20,2(2) mnt | (8)− | ||||||||||||||||
124m3Sb | 40,8038(7) keV | 3,2(3) µdtk | (3+, 4+) | ||||||||||||||||
125Sb | 51 | 74 | 124,9052538(28) | 2,75856(25) thn | β− | 125mTe | 7/2+ | ||||||||||||
126Sb | 51 | 75 | 125,90725(3) | 12,35(6) hri | β− | 126Te | (8−) | ||||||||||||
126m1Sb | 17,7(3) keV | 19,15(8) mnt | β− (86%) | 126Te | (5+) | ||||||||||||||
IT (14%) | 126Sb | ||||||||||||||||||
126m2Sb | 40,4(3) keV | ~11 dtk | IT | 126m1Sb | (3−) | ||||||||||||||
126m3Sb | 104,6(3) keV | 553(5) ndtk | (3+) | ||||||||||||||||
127Sb | 51 | 76 | 126,906924(6) | 3,85(5) hri | β− | 127mTe | 7/2+ | ||||||||||||
128Sb | 51 | 77 | 127,909169(27) | 9,01(4) jam | β− | 128Te | 8− | ||||||||||||
128mSb | 10(7) keV | 10,4(2) mnt | β− (96,4%) | 128Te | 5+ | ||||||||||||||
IT (3,6%) | 128Sb | ||||||||||||||||||
129Sb | 51 | 78 | 128,909148(23) | 4,40(1) jam | β− | 129mTe | 7/2+ | ||||||||||||
129m1Sb | 1851,05(10) keV | 17,7(1) mnt | β− (85%) | 129Te | (19/2−) | ||||||||||||||
IT (15%) | 129Sb | ||||||||||||||||||
129m2Sb | 1860,90(10) keV | >2 µdtk | (15/2−) | ||||||||||||||||
129m3Sb | 2138,9(5) keV | 1,1(1) µdtk | (23/2+) | ||||||||||||||||
130Sb | 51 | 79 | 129,911656(18) | 39,5(8) mnt | β− | 130Te | (8−)# | ||||||||||||
130mSb | 4,80(20) keV | 6,3(2) mnt | β− | 130Te | (4, 5)+ | ||||||||||||||
131Sb | 51 | 80 | 130,911982(22) | 23,03(4) mnt | β− | 131mTe | (7/2+) | ||||||||||||
132Sb | 51 | 81 | 131,914467(15) | 2,79(5) mnt | β− | 132Te | (4+) | ||||||||||||
132m1Sb | 200(30) keV | 4,15(5) mnt | β− | 132Te | (8−) | ||||||||||||||
132m2Sb | 254,5(3) keV | 102(4) ndtk | (6−) | ||||||||||||||||
133Sb | 51 | 82 | 132,915252(27) | 2,5(1) mnt | β− | 133mTe | (7/2+) | ||||||||||||
134Sb | 51 | 83 | 133,92038(5) | 0,78(6) dtk | β− | 134Te | (0-) | ||||||||||||
134mSb | 80(110) keV | 10,07(5) dtk | β− (99,9%) | 134Te | (7−) | ||||||||||||||
β−, n (0,091%) | 133Te | ||||||||||||||||||
135Sb | 51 | 84 | 134,92517(11) | 1,68(2) dtk | β− (82,4%) | 135Te | (7/2+) | ||||||||||||
β−, n (17,6%) | 134Te | ||||||||||||||||||
136Sb | 51 | 85 | 135,93035(32)# | 0,923(14) dtk | β− (83%) | 136Te | 1−# | ||||||||||||
β−, n (17%) | 135Te | ||||||||||||||||||
136mSb | 173(3) keV | 570(50) ndtk | 6−# | ||||||||||||||||
137Sb | 51 | 86 | 136,93531(43)# | 450(50) mdtk | β− | 137Te | 7/2+# | ||||||||||||
β−, n | 136Te | ||||||||||||||||||
138Sb | 51 | 87 | 137,94079(32)# | 500# mdtk [>300 ndtk] | β− | 138Te | 2−# | ||||||||||||
β−, n | 137Te | ||||||||||||||||||
139Sb | 51 | 88 | 138,94598(54)# | 300# mdtk [>300 ndtk] | β− | 139Te | 7/2+# | ||||||||||||
Header & footer tabel ini: |
- mSb – Isomer nuklir tereksitasi.
- ( ) – Ketidakpastian (1σ) diberikan dalam bentuk ringkas dalam tanda kurung setelah digit terakhir yang sesuai.
- # – Massa atom bertanda #: nilai dan ketidakpastian yang diperoleh bukan dari data eksperimen murni, tetapi setidaknya sebagian dari tren dari Permukaan Massa (trends from the Mass Surface, TMS).
- Mode peluruhan:
EC: Penangkapan elektron IT: Transisi isomerik n: Emisi neutron p: Emisi proton - Simbol miring tebal sebagai anak – Produk anak hampir stabil.
- Simbol tebal sebagai anak – Produk anak stabil.
- ( ) nilai spin – Menunjukkan spin dengan argumen penempatan yang lemah.
- # – Nilai yang ditandai # tidak murni berasal dari data eksperimen, tetapi setidaknya sebagian dari tren nuklida tetangga (trends of neighboring nuclides, TNN).
- Secara teoritis mampu mengalami fisi spontan
Referensi
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