Isotopes of bismuth

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Isotopes of bismuth  (83Bi)
Main isotopes [1] Decay
abun­dance half-life (t1/2) mode pro­duct
207Bi synth 31.22 y β+ 207Pb
208Bisynth3.68×105 yβ+ 208Pb
209Bi 100%2.01×1019 y α 205Tl
210Bi trace 5.012 d β 210Po
α 206Tl
210mBisynth3.04×106 yα 206Tl
Standard atomic weight Ar°(Bi)

Bismuth (83Bi) has 41 known isotopes, ranging from 184Bi to 224Bi. Bismuth has no stable isotopes, but does have one naturally occurring, very long-lived isotope; thus, the standard atomic weight can be given from that isotope, bismuth-209. Though it is now known to be radioactive, it may still been considered practically stable because it has a half-life of 2.01×1019 years, which is more than a billion times the age of the universe.

Contents

Besides 209Bi, the most stable bismuth radioisotopes are 210mBi with a half-life of 3.04 million years, 208Bi with a half-life of 368,000 years and 207Bi, with a half-life of 31.22 years, none of which occur in nature. All other isotopes have half-lives under 15 days, most under two hours. Of naturally occurring radioisotopes, the most stable is radiogenic 210Bi with a half-life of 5.012 days. 210mBi is unusual for being a nuclear isomer with a half-life many orders of magnitude longer than that of the ground state.

List of isotopes


Nuclide
[n 1]
Historic
name
Z N Isotopic mass (Da) [4]
[n 2] [n 3]
Half-life [1]
[n 4]
Decay
mode
[1]
[n 5]
Daughter
isotope

[n 6]
Spin and
parity [1]
[n 7] [n 8]
Isotopic
abundance
Excitation energy [n 8]
184Bi [5] 83101184.00135(13)#6.6(15) ms α 180Tl3+#
184mBi [n 9] 150(100)# keV13(2) msα180Tl10−#
185Bi [6] 83102184.99760(9)#2.8+2.3
−1.0
 μs
p (92%)184Pb(1/2+)
α (8%)181Tl
185mBi70(50)# keV58(2) μs IT 185Bi(7/2−, 9/2−)
186Bi83103185.996623(18)14.8(7) msα (99.99%)182Tl(3+)
β+ (?%)186Pb
β+, SF (0.011%)(various)
186mBi [n 9] 170(100)# keV9.8(4) msα (99.99%)182Tl(10−)
β+ (?%)186Pb
β+, SF (0.011%)(various)
187Bi83104186.993147(11)37(2) msα183Tl(9/2−)
187m1Bi108(8) keV370(20) μsα183Tl1/2+
187m2Bi252(3) keV7(5) μsIT187Bi(13/2+)
188Bi83105187.992276(12)60(3) msα184Tl(3+)
β+, SF (0.0014%)(various)
188m1Bi66(30) keV>5 μs7+#
188m2Bi153(30) keV265(15) msα184Tl(10−)
β+, SF (0.0046%)(various)
189Bi83106188.989195(22)688(5) msα185Tl9/2−
189m1Bi184(5) keV5.0(1) msα (83%)185Tl1/2+
IT (17%)189Bi
189m2Bi357.6(5) keV880(50) nsIT189Bi13/2+
190Bi83107189.988625(23)6.3(1) sα (77%)186Tl(3+)
β+ (23%)190Pb
β+, SF (6×10−6%)(various)
190m1Bi120(40) keV6.2(1) sα (70%)186Tl10−
β+ (30%)190Pb
β+, SF (4×10−6%)(various)
190m2Bi121(15) keV175(8) nsIT190Bi(5−)
190m3Bi394(40) keV1.3(8) μsIT190Bi(8−)
191Bi83108190.985787(8)12.4(3) sα (51%)187Tl9/2−
β+ (49%)191Pb
191m1Bi242(4) keV125(8) msα (68%)187Tl1/2+
IT (?%)191Bi
β+ (?%)191Pb
191m2Bi429.7(5) keV562(10) nsIT191Bi13/2+
191m3Bi1875(25)# keV400(40) nsIT191Bi25/2-#
192Bi83109191.98547(3)34.6(9) sβ+ (88%)192Pb(3+)
α (12%)188Tl
192mBi140(30) keV39.6(4) sβ+ (90%)192Pb10−
α (10%)188Tl
193Bi83110192.982947(8)63.6(30) sβ+ (96.5%)193Pb9/2−
α (3.5%)189Tl
193m1Bi305(6) keV3.20(14) sα (84%)189Tl1/2+
β+ (16%)193Pb
193m2Bi605.53(18) keV153(10) nsIT193Bi13/2+
193m3Bi2349.6(6) keV85(3) μsIT193Bi29/2+
193m4Bi2405.1(7) keV3.02(8) μsIT193Bi(29/2−)
194Bi83111193.982799(6)95(3) sβ+ (99.54%)194Pb3+
α (0.46%)190Tl
194m1Bi150(50) keV125(2) sβ+194Pb(6+, 7+)
194m2Bi163(4) keV115(4) sβ+ (99.80%)194Pb(10−)
α (0.20%)190Tl
195Bi83112194.980649(6)183(4) sβ+ (99.97%)195Pb9/2−
α (0.030%)191Tl
195m1Bi399(6) keV87(1) sβ+ (67%)195Pb1/2+
α (33%)191Tl
195m2Bi2381.0(5) keV614(5) nsIT195Bi(29/2−)
195m3Bi2615.9(5) keV1.49(1) μsIT195Bi29/2+
196Bi83113195.980667(26)5.13(20) minβ+196Pb(3+)
α (0.00115%)192Tl
196m1Bi166.4(29) keV0.6(5) sIT196Bi(7+)
196m2Bi272(3) keV4.00(5) minβ+ (74.2%)196Pb(10−)
IT (25.8%)196Bi
α (3.8×10−4%)196Bi
197Bi83114196.978865(9)9.33(50) minβ+197Pb9/2−
197m1Bi533(12) keV5.04(16) minα (55%)193Tl1/2+
β+ (45%)197Pb
197m2Bi2403(12) keV263(13) nsIT197Bi(29/2−)
197m3Bi2929.5(5) keV209(30) nsIT197Bi(31/2−)
198Bi83115197.979201(30)10.3(3) minβ+198Pb3+
198m1Bi290(40) keV11.6(3) minβ+198Pb7+
198m2Bi540(40) keV7.7(5) sIT198Bi10−
199Bi83116198.977673(11)27(1) minβ+199Pb9/2−
199m1Bi667(3) keV24.70(15) minβ+ (>98%)199Pb(1/2+)
IT (<2%)199Bi
α (0.01%)195Tl
199m2Bi1962(23) keV0.10(3) μsIT199Bi25/2+#
199m3Bi2548(23) keV168(13) nsIT199Bi29/2−#
200Bi83117199.978131(24)36.4(5) minβ+200Pb7+
200m1Bi [n 9] 100(70)# keV31(2) minβ+ (?%)200Pb(2+)
IT (?%)200Bi
200m2Bi428.20(10) keV400(50) msIT200Bi(10−)
201Bi83118200.976995(13)103(3) minβ+201Pb9/2−
201m1Bi846.35(18) keV57.5(21) minβ+201Pb1/2+
α (?%)197Tl
201m2Bi1973(23) keV118(28) nsIT201Bi25/2+#
201m3Bi2012(23) keV105(75) nsIT201Bi27/2+#
201m4Bi2781(23) keV124(4) nsIT201Bi29/2−#
202Bi83119201.977723(15)1.72(5) hβ+202Pb5+
α (<10−5%)198Tl
202m1Bi625(12) keV3.04(6) μsIT202Bi10−#
202m2Bi2617(12) keV310(50) nsIT202Bi(17+)
203Bi83120202.976892(14)11.76(5) hβ+203Pb9/2−
203m1Bi1098.21(9) keV305(5) msIT203Bi1/2+
203m2Bi2041.5(6) keV194(30) nsIT203Bi25/2+
204Bi83121203.977836(10)11.22(10) hβ+204Pb6+
204m1Bi805.5(3) keV13.0(1) msIT204Bi10−
204m2Bi2833.4(11) keV1.07(3) msIT204Bi17+
205Bi83122204.977385(5)14.91(7) dβ+205Pb9/2−
205m1Bi1497.17(9) keV7.9(7) μsIT205Bi1/2+
205m2Bi2064.7(4) keV100(6) nsIT205Bi21/2+
205m3Bi2139.0(7) keV220(25) nsIT205Bi25/2+
206Bi83123205.978499(8)6.243(3) dβ+206Pb6+
206m1Bi59.897(17) keV7.7(2) μsIT206Bi4+
206m2Bi1044.8(7) keV890(10) μsIT206Bi10−
206m3Bi9233.3(8) keV155(15) nsIT206Bi(28−)
206m4Bi10170.5(8) keV>2 μsIT206Bi(31+)
207Bi83124206.9784706(26)31.22(17) yβ+207Pb9/2−
207mBi2101.61(16) keV182(6) μsIT207Bi21/2+
208Bi83125207.9797421(25)3.68(4)×105 yβ+208Pb5+
208mBi1571.1(4) keV2.58(4) msIT208Bi10−
209Bi
[n 10] [n 11]
83126208.9803986(15)2.01(8)×1019 y
[n 12]
α205Tl9/2−1.0000
210BiRadium E83127209.9841202(15)5.012(5) dβ210Po1−Trace [n 13]
α (1.32×10−4%)206Tl
210mBi271.31(11) keV3.04(6)×106 yα [n 14] 206Tl9−
211BiActinium C83128210.987269(6)2.14(2) minα (99.72%)207Tl9/2−Trace [n 15]
β (0.276%)211Po
211mBi1257(10) keV1.4(3) μsIT211Bi(25/2−)
212BiThorium C83129211.9912850(20)60.55(6) minβ (64.05%)212Po1−Trace [n 16]
α (35.94%)208Tl
β, α (0.014%)208Pb
212m1Bi250(30) keV25.0(2) minα (67%)208Tl(8−, 9−)
β, α (30%)208Pb
β (3%)212Po
212m2Bi1479(30) keV7.0(3) minβ212Po(18−)
213Bi
[n 17]
83130212.994384(5)45.60(4) minβ (97.91%)213Po9/2−Trace [n 18]
α (2.09%)209Tl
213mBi1353(21) keV>168 s25/2−#
214BiRadium C83131213.998711(12)19.9(4) minβ (99.98%)214Po1−Trace [n 13]
α (0.021%)210Tl
β, α (0.003%)210Pb
214mBi539(30) keV>93 s8−#
215Bi83132215.001749(6)7.62(13) minβ [n 19] 215Po(9/2−)Trace [n 15]
215mBi1367(20)# keV36.9(6) sIT (76.9%)215Bi(25/2−)
β (23.1%)215Po
216Bi83133216.006306(12)2.21(4) minβ216Po(6−, 7−)
216mBi [n 9] 24(19) keV6.6(21) minβ216Po3−#
217Bi83134217.009372(19)98.5(13) sβ217Po9/2−#
217mBi1491(20) keV3.0(2) μsIT217Bi25/2−#
218Bi83135218.014188(29)33(1) sβ218Po8−#
219Bi83136219.01752(22)#8.7(29) sβ219Po9/2−#
220Bi83137220.02250(32)#9.5(57) sβ220Po1−#
221Bi83138221.02598(32)#2# s
[>300 ns]
9/2−#
222Bi83139222.03108(32)#3# s
[>300 ns]
1−#
223Bi83140223.03461(43)#1# s
[>300 ns]
9/2−#
224Bi83141224.03980(43)#1# s
[>300 ns]
1−#
This table header & footer:
  1. mBi  Excited nuclear isomer.
  2. ()  Uncertainty (1σ) is given in concise form in parentheses after the corresponding last digits.
  3. #  Atomic mass marked #: value and uncertainty derived not from purely experimental data, but at least partly from trends from the Mass Surface (TMS).
  4. Bold half-life  nearly stable, half-life longer than age of universe.
  5. Modes of decay:
    EC: Electron capture
    IT: Isomeric transition
    p: Proton emission
  6. Bold symbol as daughter  Daughter product is stable.
  7. () spin value  Indicates spin with weak assignment arguments.
  8. 1 2 #  Values marked # are not purely derived from experimental data, but at least partly from trends of neighboring nuclides (TNN).
  9. 1 2 3 4 Order of ground state and isomer is uncertain.
  10. Formerly believed to be final decay product of 4n+1 decay chain
  11. Primordial radioisotope, also some is radiogenic from the extinct nuclide 237Np
  12. Formerly believed to be the heaviest stable nuclide
  13. 1 2 Intermediate decay product of 238U
  14. Theoretically capable of isomeric transition to 210Bi with a partial half-life of ~5.5×1020 years or β decay to 210Po with a partial half-life over 1013 years. [7]
  15. 1 2 Intermediate decay product of 235U
  16. Intermediate decay product of 232Th
  17. Used in medicine such as for cancer treatment.
  18. Intermediate decay product of 237Np
  19. Theoretically capable of α decay to 211Tl; the branching ratio is expected to be ~8×10−5% (partial half-life ~18.1 y). [8]

Bismuth-213

Bismuth-213 (213Bi) has a half-life of 45.6 minutes and decays mainly by beta emission to polonium-213; with only 2.1% going via alpha emission to thallium-209; however, as the polonium instantly decays by alpha, one alpha particle is emitted per atom. The amounts needed for medical use are always produced through its decay chain (the neptunium series) from either thorium-229 (limited supply due to the long life of that isotope) or actinium-225, which can be produced directly from radium-226, for example by bombardment with bremsstrahlung photons from a linear particle accelerator, knocking out a neutron and through beta decay giving actinium-225.

In 1997, an antibody conjugate with 213Bi was used to treat patients with leukemia, and this isotope has otherwise been used in targeted alpha therapy (TAT) to treat a variety of cancers. [9]

Bismuth-213 is also produced in the decay of uranium-233, the fuel bred by thorium reactors, but as mentioned this goes through the long-lived thorium-229, so the production rates from each reactor will not be large.

See also

Daughter products other than bismuth

References

  1. 1 2 3 4 Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.
  2. "Standard Atomic Weights: Bismuth". CIAAW. 2005.
  3. Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; Böhlke, John K.; Chesson, Lesley A.; Coplen, Tyler B.; Ding, Tiping; Dunn, Philip J. H.; Gröning, Manfred; Holden, Norman E.; Meijer, Harro A. J. (2022-05-04). "Standard atomic weights of the elements 2021 (IUPAC Technical Report)". Pure and Applied Chemistry. doi:10.1515/pac-2019-0603. ISSN   1365-3075.
  4. Wang, Meng; Huang, W.J.; Kondev, F.G.; Audi, G.; Naimi, S. (2021). "The AME 2020 atomic mass evaluation (II). Tables, graphs and references*". Chinese Physics C. 45 (3): 030003. doi:10.1088/1674-1137/abddaf.
  5. Andreyev, A. N.; Ackermann, D.; Heßberger, F. P.; Hofmann, S.; Huyse, M.; Kojouharov, I.; Kindler, B.; Lommel, B.; Münzenberg, G.; Page, R. D.; Vel, K. Van de; Duppen, P. Van; Heyde, K. (1 October 2003). "α-decay spectroscopy of light odd-odd Bi isotopes - II: 186Bi and the new nuclide 184Bi" (PDF). The European Physical Journal A. 18 (1): 55–64. Bibcode:2003EPJA...18...55A. doi:10.1140/epja/i2003-10051-1. ISSN   1434-601X. S2CID   122369569 . Retrieved 20 June 2023.
  6. Doherty, D. T.; Andreyev, A. N.; Seweryniak, D.; Woods, P. J.; Carpenter, M. P.; Auranen, K.; Ayangeakaa, A. D.; Back, B. B.; Bottoni, S.; Canete, L.; Cubiss, J. G.; Harker, J.; Haylett, T.; Huang, T.; Janssens, R. V. F.; Jenkins, D. G.; Kondev, F. G.; Lauritsen, T.; Lederer-Woods, C.; Li, J.; Müller-Gatermann, C.; Potterveld, D.; Reviol, W.; Savard, G.; Stolze, S.; Zhu, S. (12 November 2021). "Solving the Puzzles of the Decay of the Heaviest Known Proton-Emitting Nucleus 185Bi". Physical Review Letters. 127 (20): 202501. Bibcode:2021PhRvL.127t2501D. doi:10.1103/PhysRevLett.127.202501. hdl: 20.500.11820/ac1e5604-7bba-4a25-a538-795ca4bdc875 . ISSN   0031-9007. PMID   34860042. S2CID   244089059 . Retrieved 20 June 2023.
  7. Tuggle, D. G. (August 1976). Decay studies of a long lived high spin isomer of 210Bi (Thesis). California Univ., Berkeley (USA): Lawrence Berkeley Lab. See the section "210mBi Decay to 210Po".
  8. "Adopted Levels for 215Bi" (PDF). NNDC Chart of Nuclides.
  9. Imam, S (2001). "Advancements in cancer therapy with alpha-emitters: a review". International Journal of Radiation Oncology, Biology, Physics. 51 (1): 271–278. doi:10.1016/S0360-3016(01)01585-1. PMID   11516878.