isotopes of bismuth

Bismuth (₈₃Bi) has 41 known isotopes, ranging from ¹⁸⁴Bi to ²²⁴Bi. Bismuth has no stable isotopes, but does have one very long-lived isotope; thus, the standard atomic weight can be given as {{val|208.98040|(1)}}. Although bismuth-209 is now known to be radioactive, it has classically been considered to be a stable isotope because it has a half-life of approximately 2.01×10¹⁹ years, which is more than a billion times the age of the universe. 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 32.9 years, none of which occur in nature. All other isotopes have half-lives under 1 year, most under a day. 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 multiple orders of magnitude longer than that of the ground state.

List of isotopes

{{Anchor|Bismuth-185m1|Bismuth-185m2|Bismuth-197m4|Bismuth-197m5}}

{{Isotopes table

|symbol=Bi

|refs=NUBASE2020, AME2020 II

|notes=m, histname, unc(), mass#, exen#, hl-nst, spin(), spin#, daughter-st, p, IT, EC

}}

|-id=Bismuth-184

| ¹⁸⁴Bi{{cite journal |last1=Andreyev |first1=A. N. |last2=Ackermann |first2=D. |last3=Heßberger |first3=F. P. |last4=Hofmann |first4=S. |last5=Huyse |first5=M. |last6=Kojouharov |first6=I. |last7=Kindler |first7=B. |last8=Lommel |first8=B. |last9=Münzenberg |first9=G. |last10=Page |first10=R. D. |last11=Vel |first11=K. Van de |last12=Duppen |first12=P. Van |last13=Heyde |first13=K. |title=α-decay spectroscopy of light odd-odd Bi isotopes - II: ¹⁸⁶Bi and the new nuclide ¹⁸⁴Bi |journal=The European Physical Journal A |date=1 October 2003 |volume=18 |issue=1 |pages=55–64 |doi=10.1140/epja/i2003-10051-1 |bibcode=2003EPJA...18...55A |s2cid=122369569 |url=https://link.springer.com/content/pdf/10.1140/epja/i2003-10051-1.pdf |access-date=20 June 2023 |language=en |issn=1434-601X}}

| style="text-align:right" | 83

| style="text-align:right" | 101

| 184.00135(13)#

| 6.6(15) ms

| α

| ¹⁸⁰Tl

| 3+#

|-id=Bismuth-184m

| style="text-indent:1em" | ^184mBiOrder of ground state and isomer is uncertain.

| colspan="3" style="text-indent:2em" | 150(100)# keV

| 13(2) ms

| α

| ¹⁸⁰Tl

| 10−#

|-id=Bismuth-185

| rowspan=2|¹⁸⁵Bi{{cite journal |last1=Doherty |first1=D. T. |last2=Andreyev |first2=A. N. |last3=Seweryniak |first3=D. |last4=Woods |first4=P. J. |last5=Carpenter |first5=M. P. |last6=Auranen |first6=K. |last7=Ayangeakaa |first7=A. D. |last8=Back |first8=B. B. |last9=Bottoni |first9=S. |last10=Canete |first10=L. |last11=Cubiss |first11=J. G. |last12=Harker |first12=J. |last13=Haylett |first13=T. |last14=Huang |first14=T. |last15=Janssens |first15=R. V. F. |last16=Jenkins |first16=D. G. |last17=Kondev |first17=F. G. |last18=Lauritsen |first18=T. |last19=Lederer-Woods |first19=C. |last20=Li |first20=J. |last21=Müller-Gatermann |first21=C. |last22=Potterveld |first22=D. |last23=Reviol |first23=W. |last24=Savard |first24=G. |last25=Stolze |first25=S. |last26=Zhu |first26=S. |title=Solving the Puzzles of the Decay of the Heaviest Known Proton-Emitting Nucleus ¹⁸⁵Bi |journal=Physical Review Letters |date=12 November 2021 |volume=127 |issue=20 |page=202501 |doi=10.1103/PhysRevLett.127.202501 |pmid=34860042 |bibcode=2021PhRvL.127t2501D |s2cid=244089059 |url=https://journals.aps.org/prl/pdf/10.1103/PhysRevLett.127.202501 |access-date=20 June 2023 |language=en |issn=0031-9007|hdl=20.500.11820/ac1e5604-7bba-4a25-a538-795ca4bdc875 |hdl-access=free }}

| rowspan=2|

| rowspan=2 style="text-align:right" | 83

| rowspan=2 style="text-align:right" | 102

| rowspan=2|184.99760(9)#

| rowspan=2|{{val|2.8|2.3|1.0|u=μs}}

| p (92%)

| ¹⁸⁴Pb

| rowspan=2|(1/2+)

| rowspan=2|

| α (8%)

| ¹⁸¹Tl

|-id=Bismuth-185m

| style="text-indent:1em" | ^185mBi

| colspan="3" style="text-indent:2em" | 70(50)# keV

| 58(2) μs

| IT

| ¹⁸⁵Bi

| (7/2−, 9/2−)

|-id=Bismuth-186

| rowspan=3|¹⁸⁶Bi

| rowspan=3|

| rowspan=3 style="text-align:right" | 83

| rowspan=3 style="text-align:right" | 103

| rowspan=3|185.996623(18)

| rowspan=3|14.8(7) ms

| α (99.99%)

| ¹⁸²Tl

| rowspan=3|(3+)

| rowspan=3|

| β⁺ (?%)

| ¹⁸⁶Pb

| β⁺, SF (0.011%)

| (various)

|-id=Bismuth-186m

| rowspan=3 style="text-indent:1em" | ^186mBi

| rowspan=3|

| rowspan=3 colspan="3" style="text-indent:2em" | 170(100)# keV

| rowspan=3|9.8(4) ms

| α (99.99%)

| ¹⁸²Tl

| rowspan=3|(10−)

| rowspan=3|

| β⁺ (?%)

| ¹⁸⁶Pb

| β⁺, SF (0.011%)

| (various)

|-id=Bismuth-187

| ¹⁸⁷Bi

| style="text-align:right" | 83

| style="text-align:right" | 104

| 186.993147(11)

| 37(2) ms

| α

| ¹⁸³Tl

| (9/2−)

|-id=Bismuth-187m1

| style="text-indent:1em" | ^187m1Bi

| colspan="3" style="text-indent:2em" | 108(8) keV

| 370(20) μs

| α

| ¹⁸³Tl

| 1/2+

|-id=Bismuth-187m2

| style="text-indent:1em" | ^187m2Bi

| colspan="3" style="text-indent:2em" | 252(3) keV

| 7(5) μs

| IT

| ¹⁸⁷Bi

| (13/2+)

|-id=Bismuth-188

| rowspan=2|¹⁸⁸Bi

| rowspan=2|

| rowspan=2 style="text-align:right" | 83

| rowspan=2 style="text-align:right" | 105

| rowspan=2|187.992276(12)

| rowspan=2|60(3) ms

| α

| ¹⁸⁴Tl

| rowspan=2|(3+)

| rowspan=2|

| β⁺, SF (0.0014%)

| (various)

|-id=Bismuth-188m1

| style="text-indent:1em" | ^188m1Bi

| colspan="3" style="text-indent:2em" | 66(30) keV

| >5 μs

| 7+#

|-id=Bismuth-188m2

| rowspan=2 style="text-indent:1em" | ^188m2Bi

| rowspan=2|

| rowspan=2 colspan="3" style="text-indent:2em" | 153(30) keV

| rowspan=2|265(15) ms

| α

| ¹⁸⁴Tl

| rowspan=2|(10−)

| rowspan=2|

| β⁺, SF (0.0046%)

| (various)

|-id=Bismuth-189

| ¹⁸⁹Bi

| style="text-align:right" | 83

| style="text-align:right" | 106

| 188.989195(22)

| 688(5) ms

| α

| ¹⁸⁵Tl

| 9/2−

|-id=Bismuth-189m1

| rowspan=2 style="text-indent:1em" | ^189m1Bi

| rowspan=2|

| rowspan=2 colspan="3" style="text-indent:2em" | 184(5) keV

| rowspan=2|5.0(1) ms

| α (83%)

| ¹⁸⁵Tl

| rowspan=2|1/2+

| rowspan=2|

| IT (17%)

| ¹⁸⁹Bi

|-id=Bismuth-189m2

| style="text-indent:1em" | ^189m2Bi

| colspan="3" style="text-indent:2em" | 357.6(5) keV

| 880(50) ns

| IT

| ¹⁸⁹Bi

| 13/2+

|-id=Bismuth-190

| rowspan=3|¹⁹⁰Bi

| rowspan=3|

| rowspan=3 style="text-align:right" | 83

| rowspan=3 style="text-align:right" | 107

| rowspan=3|189.988625(23)

| rowspan=3|6.3(1) s

| α (77%)

| ¹⁸⁶Tl

| rowspan=3|(3+)

| rowspan=3|

| β⁺ (23%)

| ¹⁹⁰Pb

| β⁺, SF (6×10⁻⁶%)

| (various)

|-id=Bismuth-190m1

| rowspan=3 style="text-indent:1em" | ^190m1Bi

| rowspan=3|

| rowspan=3 colspan="3" style="text-indent:2em" | 120(40) keV

| rowspan=3|6.2(1) s

| α (70%)

| ¹⁸⁶Tl

| rowspan=3|10−

| rowspan=3|

| β⁺ (30%)

| ¹⁹⁰Pb

| β⁺, SF (4×10⁻⁶%)

| (various)

|-id=Bismuth-190m2

| style="text-indent:1em" | ^190m2Bi

| colspan="3" style="text-indent:2em" | 121(15) keV

| 175(8) ns

| IT

| ¹⁹⁰Bi

| (5−)

|-id=Bismuth-190m3

| style="text-indent:1em" | ^190m3Bi

| colspan="3" style="text-indent:2em" | 394(40) keV

| 1.3(8) μs

| IT

| ¹⁹⁰Bi

| (8−)

|-id=Bismuth-191

| rowspan=2|¹⁹¹Bi

| rowspan=2|

| rowspan=2 style="text-align:right" | 83

| rowspan=2 style="text-align:right" | 108

| rowspan=2|190.985787(8)

| rowspan=2|12.4(3) s

| α (51%)

| ¹⁸⁷Tl

| rowspan=2|9/2−

| rowspan=2|

| β⁺ (49%)

| ¹⁹¹Pb

|-id=Bismuth-191m1

| rowspan=3 style="text-indent:1em" | ^191m1Bi

| rowspan=3|

| rowspan=3 colspan="3" style="text-indent:2em" | 242(4) keV

| rowspan=3|125(8) ms

| α (68%)

| ¹⁸⁷Tl

| rowspan=3|1/2+

| rowspan=3|

| IT (?%)

| ¹⁹¹Bi

| β⁺ (?%)

| ¹⁹¹Pb

|-id=Bismuth-191m2

| style="text-indent:1em" | ^191m2Bi

| colspan="3" style="text-indent:2em" | 429.7(5) keV

| 562(10) ns

| IT

| ¹⁹¹Bi

| 13/2+

|-id=Bismuth-191m3

| style="text-indent:1em" | ^191m3Bi

| colspan="3" style="text-indent:2em" | 1875(25)# keV

| 400(40) ns

| IT

| ¹⁹¹Bi

| 25/2-#

|-id=Bismuth-192

| rowspan=2|¹⁹²Bi

| rowspan=2|

| rowspan=2 style="text-align:right" | 83

| rowspan=2 style="text-align:right" | 109

| rowspan=2|191.98547(3)

| rowspan=2|34.6(9) s

| β⁺ (88%)

| ¹⁹²Pb

| rowspan=2|(3+)

| rowspan=2|

| α (12%)

| ¹⁸⁸Tl

|-id=Bismuth-192m

| rowspan=2 style="text-indent:1em" | ^192mBi

| rowspan=2|

| rowspan=2 colspan="3" style="text-indent:2em" | 140(30) keV

| rowspan=2|39.6(4) s

| β⁺ (90%)

| ¹⁹²Pb

| rowspan=2|10−

| rowspan=2|

| α (10%)

| ¹⁸⁸Tl

|-id=Bismuth-193

| rowspan=2|¹⁹³Bi

| rowspan=2|

| rowspan=2 style="text-align:right" | 83

| rowspan=2 style="text-align:right" | 110

| rowspan=2|192.982947(8)

| rowspan=2|63.6(30) s

| β⁺ (96.5%)

| ¹⁹³Pb

| rowspan=2|9/2−

| rowspan=2|

| α (3.5%)

| ¹⁸⁹Tl

|-id=Bismuth-193m1

| rowspan=2 style="text-indent:1em" | ^193m1Bi

| rowspan=2|

| rowspan=2 colspan="3" style="text-indent:2em" | 305(6) keV

| rowspan=2|3.20(14) s

| α (84%)

| ¹⁸⁹Tl

| rowspan=2|1/2+

| rowspan=2|

| β⁺ (16%)

| ¹⁹³Pb

|-id=Bismuth-193m2

| style="text-indent:1em" | ^193m2Bi

| colspan="3" style="text-indent:2em" | 605.53(18) keV

| 153(10) ns

| IT

| ¹⁹³Bi

| 13/2+

|-id=Bismuth-193m3

| style="text-indent:1em" | ^193m3Bi

| colspan="3" style="text-indent:2em" | 2349.6(6) keV

| 85(3) μs

| IT

| ¹⁹³Bi

| 29/2+

|-id=Bismuth-193m4

| style="text-indent:1em" | ^193m4Bi

| colspan="3" style="text-indent:2em" | 2405.1(7) keV

| 3.02(8) μs

| IT

| ¹⁹³Bi

| (29/2−)

|-id=Bismuth-194

| rowspan=2|¹⁹⁴Bi

| rowspan=2|

| rowspan=2 style="text-align:right" | 83

| rowspan=2 style="text-align:right" | 111

| rowspan=2|193.982799(6)

| rowspan=2|95(3) s

| β⁺ (99.54%)

| ¹⁹⁴Pb

| rowspan=2|3+

| rowspan=2|

| α (0.46%)

| ¹⁹⁰Tl

|-id=Bismuth-194m1

| style="text-indent:1em" | ^194m1Bi

| colspan="3" style="text-indent:2em" | 150(50) keV

| 125(2) s

| β⁺

| ¹⁹⁴Pb

| (6+, 7+)

|-id=Bismuth-194m2

| rowspan=2 style="text-indent:1em" | ^194m2Bi

| rowspan=2|

| rowspan=2 colspan="3" style="text-indent:2em" | 163(4) keV

| rowspan=2|115(4) s

| β⁺ (99.80%)

| ¹⁹⁴Pb

| rowspan=2|(10−)

| rowspan=2|

| α (0.20%)

| ¹⁹⁰Tl

|-id=Bismuth-195

| rowspan=2|¹⁹⁵Bi

| rowspan=2|

| rowspan=2 style="text-align:right" | 83

| rowspan=2 style="text-align:right" | 112

| rowspan=2|194.980649(6)

| rowspan=2|183(4) s

| β⁺ (99.97%)

| ¹⁹⁵Pb

| rowspan=2|9/2−

| rowspan=2|

| α (0.030%)

| ¹⁹¹Tl

|-id=Bismuth-195m1

| rowspan=2 style="text-indent:1em" | ^195m1Bi

| rowspan=2|

| rowspan=2 colspan="3" style="text-indent:2em" | 399(6) keV

| rowspan=2|87(1) s

| β⁺ (67%)

| ¹⁹⁵Pb

| rowspan=2|1/2+

| rowspan=2|

| α (33%)

| ¹⁹¹Tl

|-id=Bismuth-195m2

| style="text-indent:1em" | ^195m2Bi

| colspan="3" style="text-indent:2em" | 2381.0(5) keV

| 614(5) ns

| IT

| ¹⁹⁵Bi

| (29/2−)

|-id=Bismuth-195m3

| style="text-indent:1em" | ^195m3Bi

| colspan="3" style="text-indent:2em" | 2615.9(5) keV

| 1.49(1) μs

| IT

| ¹⁹⁵Bi

| 29/2+

|-id=Bismuth-196

| rowspan=2|¹⁹⁶Bi

| rowspan=2|

| rowspan=2 style="text-align:right" | 83

| rowspan=2 style="text-align:right" | 113

| rowspan=2|195.980667(26)

| rowspan=2|5.13(20) min

| β⁺

| ¹⁹⁶Pb

| rowspan=2|(3+)

| rowspan=2|

| α (0.00115%)

| ¹⁹²Tl

|-id=Bismuth-196m1

| style="text-indent:1em" | ^196m1Bi

| colspan="3" style="text-indent:2em" | 166.4(29) keV

| 0.6(5) s

| IT

| ¹⁹⁶Bi

| (7+)

|-id=Bismuth-196m2

| rowspan=3 style="text-indent:1em" | ^196m2Bi

| rowspan=3|

| rowspan=3 colspan="3" style="text-indent:2em" | 272(3) keV

| rowspan=3| 4.00(5) min

| β⁺ (74.2%)

| ¹⁹⁶Pb

| rowspan=3| (10−)

| rowspan=3|

| IT (25.8%)

| ¹⁹⁶Bi

| α (3.8×10⁻⁴%)

| ¹⁹⁶Bi

|-id=Bismuth-197

| ¹⁹⁷Bi

| style="text-align:right" | 83

| style="text-align:right" | 114

| 196.978865(9)

| 9.33(50) min

| β⁺

| ¹⁹⁷Pb

| 9/2−

|-id=Bismuth-197m1

| rowspan=2 style="text-indent:1em" | ^197m1Bi

| rowspan=2|

| rowspan=2 colspan="3" style="text-indent:2em" | 533(12) keV

| rowspan=2|5.04(16) min

| α (55%)

| ¹⁹³Tl

| rowspan=2|1/2+

| rowspan=2|

| β⁺ (45%)

| ¹⁹⁷Pb

|-id=Bismuth-197m2

| style="text-indent:1em" | ^197m2Bi

| colspan="3" style="text-indent:2em" | 2403(12) keV

| 263(13) ns

| IT

| ¹⁹⁷Bi

| (29/2−)

|-id=Bismuth-197m3

| style="text-indent:1em" | ^197m3Bi

| colspan="3" style="text-indent:2em" | 2929.5(5) keV

| 209(30) ns

| IT

| ¹⁹⁷Bi

| (31/2−)

|-id=Bismuth-198

| ¹⁹⁸Bi

| style="text-align:right" | 83

| style="text-align:right" | 115

| 197.979201(30)

| 10.3(3) min

| β⁺

| ¹⁹⁸Pb

| 3+

|-id=Bismuth-198m1

| style="text-indent:1em" | ^198m1Bi

| colspan="3" style="text-indent:2em" | 290(40) keV

| 11.6(3) min

| β⁺

| ¹⁹⁸Pb

| 7+

|-id=Bismuth-198m2

| style="text-indent:1em" | ^198m2Bi

| colspan="3" style="text-indent:2em" | 540(40) keV

| 7.7(5) s

| IT

| ¹⁹⁸Bi

| 10−

|-id=Bismuth-199

| ¹⁹⁹Bi

| style="text-align:right" | 83

| style="text-align:right" | 116

| 198.977673(11)

| 27(1) min

| β⁺

| ¹⁹⁹Pb

| 9/2−

|-id=Bismuth-199m1

| rowspan=3 style="text-indent:1em" | ^199m1Bi

| rowspan=3|

| rowspan=3 colspan="3" style="text-indent:2em" | 667(3) keV

| rowspan=3|24.70(15) min

| β⁺ (>98%)

| ¹⁹⁹Pb

| rowspan=3|(1/2+)

| rowspan=3|

| IT (<2%)

| ¹⁹⁹Bi

| α (0.01%)

| ¹⁹⁵Tl

|-id=Bismuth-199m2

| style="text-indent:1em" | ^199m2Bi

| colspan="3" style="text-indent:2em" | 1962(23) keV

| 0.10(3) μs

| IT

| ¹⁹⁹Bi

| 25/2+#

|-id=Bismuth-199m3

| style="text-indent:1em" | ^199m3Bi

| colspan="3" style="text-indent:2em" | 2548(23) keV

| 168(13) ns

| IT

| ¹⁹⁹Bi

| 29/2−#

|-id=Bismuth-200

| ²⁰⁰Bi

| style="text-align:right" | 83

| style="text-align:right" | 117

| 199.978131(24)

| 36.4(5) min

| β⁺

| ²⁰⁰Pb

| 7+

|-id=Bismuth-200m1

| rowspan=2 style="text-indent:1em" | ^200m1Bi

| rowspan=2|

| rowspan=2 colspan="3" style="text-indent:2em" | 100(70)# keV

| rowspan=2|31(2) min

| β⁺ (?%)

| ²⁰⁰Pb

| rowspan=2|(2+)

| rowspan=2|

| IT (?%)

| ²⁰⁰Bi

|-id=Bismuth-200m2

| style="text-indent:1em" | ^200m2Bi

| colspan="3" style="text-indent:2em" | 428.20(10) keV

| 400(50) ms

| IT

| ²⁰⁰Bi

| (10−)

|-id=Bismuth-201

| ²⁰¹Bi

| style="text-align:right" | 83

| style="text-align:right" | 118

| 200.976995(13)

| 103(3) min

| β⁺

| ²⁰¹Pb

| 9/2−

|-id=Bismuth-201m1

| rowspan=2 style="text-indent:1em" | ^201m1Bi

| rowspan=2|

| rowspan=2 colspan="3" style="text-indent:2em" | 846.35(18) keV

| rowspan=2|57.5(21) min

| β⁺

| ²⁰¹Pb

| rowspan=2|1/2+

| rowspan=2|

| α (?%)

| ¹⁹⁷Tl

|-id=Bismuth-201m2

| style="text-indent:1em" | ^201m2Bi

| colspan="3" style="text-indent:2em" | 1973(23) keV

| 118(28) ns

| IT

| ²⁰¹Bi

| 25/2+#

|-id=Bismuth-201m3

| style="text-indent:1em" | ^201m3Bi

| colspan="3" style="text-indent:2em" | 2012(23) keV

| 105(75) ns

| IT

| ²⁰¹Bi

| 27/2+#

|-id=Bismuth-201m4

| style="text-indent:1em" | ^201m4Bi

| colspan="3" style="text-indent:2em" | 2781(23) keV

| 124(4) ns

| IT

| ²⁰¹Bi

| 29/2−#

|-id=Bismuth-202

| rowspan=2|²⁰²Bi

| rowspan=2|

| rowspan=2 style="text-align:right" | 83

| rowspan=2 style="text-align:right" | 119

| rowspan=2|201.977723(15)

| rowspan=2|1.72(5) h

| β⁺

| ²⁰²Pb

| rowspan=2|5+

| rowspan=2|

| α (<10⁻⁵%)

| ¹⁹⁸Tl

|-id=Bismuth-202m1

| style="text-indent:1em" | ^202m1Bi

| colspan="3" style="text-indent:2em" | 625(12) keV

| 3.04(6) μs

| IT

| ²⁰²Bi

| 10−#

|-id=Bismuth-202m2

| style="text-indent:1em" | ^202m2Bi

| colspan="3" style="text-indent:2em" | 2617(12) keV

| 310(50) ns

| IT

| ²⁰²Bi

| (17+)

|-id=Bismuth-203

| ²⁰³Bi

| style="text-align:right" | 83

| style="text-align:right" | 120

| 202.976892(14)

| 11.76(5) h

| β⁺

| ²⁰³Pb

| 9/2−

|-id=Bismuth-203m1

| style="text-indent:1em" | ^203m1Bi

| colspan="3" style="text-indent:2em" | 1098.21(9) keV

| 305(5) ms

| IT

| ²⁰³Bi

| 1/2+

|-id=Bismuth-203m2

| style="text-indent:1em" | ^203m2Bi

| colspan="3" style="text-indent:2em" | 2041.5(6) keV

| 194(30) ns

| IT

| ²⁰³Bi

| 25/2+

|-id=Bismuth-204

| ²⁰⁴Bi

| style="text-align:right" | 83

| style="text-align:right" | 121

| 203.977836(10)

| 11.22(10) h

| β⁺

| ²⁰⁴Pb

| 6+

|-id=Bismuth-204m1

| style="text-indent:1em" | ^204m1Bi

| colspan="3" style="text-indent:2em" | 805.5(3) keV

| 13.0(1) ms

| IT

| ²⁰⁴Bi

| 10−

|-id=Bismuth-204m2

| style="text-indent:1em" | ^204m2Bi

| colspan="3" style="text-indent:2em" | 2833.4(11) keV

| 1.07(3) ms

| IT

| ²⁰⁴Bi

| 17+

|-id=Bismuth-205

| ²⁰⁵Bi

| style="text-align:right" | 83

| style="text-align:right" | 122

| 204.977385(5)

| 14.91(7) d

| β⁺

| ²⁰⁵Pb

| 9/2−

|-id=Bismuth-205m1

| style="text-indent:1em" | ^205m1Bi

| colspan="3" style="text-indent:2em" | 1497.17(9) keV

| 7.9(7) μs

| IT

| ²⁰⁵Bi

| 1/2+

|-id=Bismuth-205m2

| style="text-indent:1em" | ^205m2Bi

| colspan="3" style="text-indent:2em" | 2064.7(4) keV

| 100(6) ns

| IT

| ²⁰⁵Bi

| 21/2+

|-id=Bismuth-205m3

| style="text-indent:1em" | ^205m3Bi

| colspan="3" style="text-indent:2em" | 2139.0(7) keV

| 220(25) ns

| IT

| ²⁰⁵Bi

| 25/2+

|-id=Bismuth-206

| ²⁰⁶Bi

| style="text-align:right" | 83

| style="text-align:right" | 123

| 205.978499(8)

| 6.243(3) d

| β⁺

| ²⁰⁶Pb

| 6+

|-id=Bismuth-206m1

| style="text-indent:1em" | ^206m1Bi

| colspan="3" style="text-indent:2em" | 59.897(17) keV

| 7.7(2) μs

| IT

| ²⁰⁶Bi

| 4+

|-id=Bismuth-206m2

| style="text-indent:1em" | ^206m2Bi

| colspan="3" style="text-indent:2em" | 1044.8(7) keV

| 890(10) μs

| IT

| ²⁰⁶Bi

| 10−

|-id=Bismuth-206m3

| style="text-indent:1em" | ^206m3Bi

| colspan="3" style="text-indent:2em" | 9233.3(8) keV

| 155(15) ns

| IT

| ²⁰⁶Bi

| (28−)

|-id=Bismuth-206m4

| style="text-indent:1em" | ^206m4Bi

| colspan="3" style="text-indent:2em" | 10170.5(8) keV

| >2 μs

| IT

| ²⁰⁶Bi

| (31+)

|-id=Bismuth-207

| ²⁰⁷Bi

| style="text-align:right" | 83

| style="text-align:right" | 124

| 206.9784706(26)

| 31.22(17) y

| β⁺

| ²⁰⁷Pb

| 9/2−

|-id=Bismuth-207m

| style="text-indent:1em" | ^207mBi

| colspan="3" style="text-indent:2em" | 2101.61(16) keV

| 182(6) μs

| IT

| ²⁰⁷Bi

| 21/2+

|-id=Bismuth-208

| ²⁰⁸Bi

| style="text-align:right" | 83

| style="text-align:right" | 125

| 207.9797421(25)

| 3.68(4)×10⁵ y

| β⁺

| ²⁰⁸Pb

| 5+

|-id=Bismuth-208m

| style="text-indent:1em" | ^208mBi

| colspan="3" style="text-indent:2em" | 1571.1(4) keV

| 2.58(4) ms

| IT

| ²⁰⁸Bi

| 10−

| ²⁰⁹Bi
Formerly believed to be final decay product of 4n+1 decay chainPrimordial radioisotope, also some is radiogenic from the extinct nuclide ²³⁷Np

| style="text-align:right" | 83

| style="text-align:right" | 126

| 208.9803986(15)

| 2.01(8)×10¹⁹ y
Formerly believed to be the heaviest stable nuclide

| α

| ²⁰⁵Tl

| 9/2−

| 1.0000

|-id=Bismuth-210

| rowspan=2|²¹⁰Bi

| rowspan=2|Radium E

| rowspan=2 style="text-align:right" | 83

| rowspan=2 style="text-align:right" | 127

| rowspan=2|209.9841202(15)

| rowspan=2|5.012(5) d

| β⁻

| ²¹⁰Po

| rowspan=2|1−

| rowspan=2|TraceIntermediate decay product of ²³⁸U

| α (1.32×10⁻⁴%)

| ²⁰⁶Tl

|-id=Bismuth-210m

| style="text-indent:1em" | ^210mBi

| colspan="3" style="text-indent:2em" | 271.31(11) keV

| 3.04(6)×10⁶ y

| α{{refn|group=n|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.{{cite thesis |last=Tuggle |first=D. G. |title=Decay studies of a long lived high spin isomer of ²¹⁰Bi |date=August 1976 |url=https://inis.iaea.org/records/qnf50-y0t48 |location=California Univ., Berkeley (USA) |publisher=Lawrence Berkeley Lab}} See the section "^210mBi Decay to ²¹⁰Po".}}

| ²⁰⁶Tl

| 9−

|-id=Bismuth-211

| rowspan=2|²¹¹Bi

| rowspan=2|Actinium C

| rowspan=2 style="text-align:right" | 83

| rowspan=2 style="text-align:right" | 128

| rowspan=2|210.987269(6)

| rowspan=2|2.14(2) min

| α (99.72%)

| ²⁰⁷Tl

| rowspan=2|9/2−

| rowspan=2|TraceIntermediate decay product of ²³⁵U

| β⁻ (0.276%)

| ²¹¹Po

|-id=Bismuth-211m

| style="text-indent:1em" | ^211mBi

| colspan="3" style="text-indent:2em" | 1257(10) keV

| 1.4(3) μs

| IT

| ²¹¹Bi

| (25/2−)

|-id=Bismuth-212

| rowspan=3|²¹²Bi

| rowspan=3|Thorium C

| rowspan=3 style="text-align:right" | 83

| rowspan=3 style="text-align:right" | 129

| rowspan=3|211.991285(2)

| rowspan=3|60.55(6) min

| β⁻ (64.05%)

| ²¹²Po

| rowspan=3|1−

| rowspan=3|TraceIntermediate decay product of ²³²Th

| α (35.94%)

| ²⁰⁸Tl

| β⁻, α (0.014%)

| ²⁰⁸Pb

|-id=Bismuth-212m1

| rowspan=3 style="text-indent:1em" | ^212m1Bi

| rowspan=3|

| rowspan=3 colspan="3" style="text-indent:2em" | 250(30) keV

| rowspan=3|25.0(2) min

| α (67%)

| ²⁰⁸Tl

| rowspan=3|(8−, 9−)

| rowspan=3|

| β⁻, α (30%)

| ²⁰⁸Pb

| β⁻ (3%)

| ²¹²Po

|-id=Bismuth-212m2

| style="text-indent:1em" | ^212m2Bi

| colspan="3" style="text-indent:2em" | 1479(30) keV

| 7.0(3) min

| β⁻

| ²¹²Po

| (18−)

| rowspan=2|²¹³Bi
Used in medicine such as for cancer treatment.A byproduct of thorium reactors via ²³³U.

| rowspan=2|

| rowspan=2 style="text-align:right" | 83

| rowspan=2 style="text-align:right" | 130

| rowspan=2|212.994384(5)

| rowspan=2|45.60(4) min

| β⁻ (97.91%)

| ²¹³Po

| rowspan=2|9/2−

| rowspan=2|TraceIntermediate decay product of ²³⁷Np

| α (2.09%)

| ²⁰⁹Tl

|-id=Bismuth-213m

| style="text-indent:1em" | ^213mBi

| colspan="3" style="text-indent:2em" | 1353(21) keV

| >168 s

| 25/2−#

|-id=Bismuth-214

| rowspan=3|²¹⁴Bi

| rowspan=3|Radium C

| rowspan=3 style="text-align:right" | 83

| rowspan=3 style="text-align:right" | 131

| rowspan=3|213.998711(12)

| rowspan=3|19.9(4) min

| β⁻ (99.98%)

| ²¹⁴Po

| rowspan=3|1−

| rowspan=3|Trace

| α (0.021%)

| ²¹⁰Tl

| β⁻, α (0.003%)

| ²¹⁰Pb

|-id=Bismuth-214m

| style="text-indent:1em" | ^214mBi

| colspan="3" style="text-indent:2em" | 539(30) keV

| >93 s

| 8−#

|-id=Bismuth-215

| ²¹⁵Bi

| style="text-align:right" | 83

| style="text-align:right" | 132

| 215.001749(6)

| 7.62(13) min

| β⁻{{refn|group=n|Theoretically capable of α decay to ²¹¹Tl; the branching ratio is expected to be ~8×10⁻⁵% (partial half-life ~18.1 y).{{cite web|url=https://www.nndc.bnl.gov/ensnds/215/Bi/adopted.pdf|title=Adopted Levels for ²¹⁵Bi|publisher=NNDC Chart of Nuclides}}}}

| ²¹⁵Po

| (9/2−)

| Trace

|-id=Bismuth-215m

| rowspan=2 style="text-indent:1em" | ^215mBi

| rowspan=2|

| rowspan=2 colspan="3" style="text-indent:2em" | 1367(20)# keV

| rowspan=2| 36.9(6) s

| IT (76.9%)

| ²¹⁵Bi

| rowspan=2| (25/2−)

| rowspan=2|

| β⁻ (23.1%)

| ²¹⁵Po

|-id=Bismuth-216

| ²¹⁶Bi

| style="text-align:right" | 83

| style="text-align:right" | 133

| 216.006306(12)

| 2.21(4) min

| β⁻

| ²¹⁶Po

| (6−, 7−)

|-id=Bismuth-216m

| style="text-indent:1em" | ^216mBi

| colspan="3" style="text-indent:2em" | 24(19) keV

| 6.6(21) min

| β⁻

| ²¹⁶Po

| 3−#

|-id=Bismuth-217

| ²¹⁷Bi

| style="text-align:right" | 83

| style="text-align:right" | 134

| 217.009372(19)

| 98.5(13) s

| β⁻

| ²¹⁷Po

| 9/2−#

|-id=Bismuth-217m

| style="text-indent:1em" | ^217mBi

| colspan="3" style="text-indent:2em" | 1491(20) keV

| 3.0(2) μs

| IT

| ²¹⁷Bi

| 25/2−#

|-id=Bismuth-218

| ²¹⁸Bi

| style="text-align:right" | 83

| style="text-align:right" | 135

| 218.014188(29)

| 33(1) s

| β⁻

| ²¹⁸Po

| 8−#

|-id=Bismuth-219

| ²¹⁹Bi

| style="text-align:right" | 83

| style="text-align:right" | 136

| 219.01752(22)#

| 8.7(29) s

| β⁻

| ²¹⁹Po

| 9/2−#

|-id=Bismuth-220

| ²²⁰Bi

| style="text-align:right" | 83

| style="text-align:right" | 137

| 220.02250(32)#

| 9.5(57) s

| β⁻

| ²²⁰Po

| 1−#

|-id=Bismuth-221

| ²²¹Bi

| style="text-align:right" | 83

| style="text-align:right" | 138

| 221.02598(32)#

| 2# s
[>300 ns]

| 9/2−#

|-id=Bismuth-222

| ²²²Bi

| style="text-align:right" | 83

| style="text-align:right" | 139

| 222.03108(32)#

| 3# s
[>300 ns]

| 1−#

|-id=Bismuth-223

| ²²³Bi

| style="text-align:right" | 83

| style="text-align:right" | 140

| 223.03461(43)#

| 1# s
[>300 ns]

| 9/2−#

|-id=Bismuth-224

| ²²⁴Bi

| style="text-align:right" | 83

| style="text-align:right" | 141

| 224.03980(43)#

| 1# s
[>300 ns]

| 1−#

Bismuth-213

Bismuth-213 (²¹³Bi) has a half-life of 45 minutes and decays via alpha emission. Commercially, bismuth-213 can be produced by bombarding radium with bremsstrahlung photons from a linear particle accelerator, which populates its progenitor actinium-225. In 1997, an antibody conjugate with ²¹³Bi was used to treat patients with leukemia. This isotope has also been tried in targeted alpha therapy (TAT) program to treat a variety of cancers.{{cite journal|doi=10.1016/S0360-3016(01)01585-1|title=Advancements in cancer therapy with alpha-emitters: a review|year=2001|last1=Imam|first1=S|journal=International Journal of Radiation Oncology, Biology, Physics|volume=51|issue=1 |pages=271–278|pmid=11516878 }} Bismuth-213 is also found in the decay chain of uranium-233, which is the fuel bred by thorium reactors.

References

Isotopic compositions and standard atomic masses from:
{{CIAAW2003}}
{{CIAAW 2005}}
Half-life, spin, and isomer data selected from the following sources.
{{NUBASE 2003}}
{{NNDC}}
{{CRC85|chapter=11}}

Category:Bismuth

Bismuth