Isotopes of rhenium

Naturally occurring rhenium (75Re) is 37.4% 185Re, which is stable (although it is predicted to decay), and 62.6% 187Re, which is unstable but has a very long half-life (4.12×1010 years). Among elements with a known stable isotope, only indium and tellurium similarly occur with a stable isotope in lower abundance than the long-lived radioactive isotope.

There are 36 other unstable isotopes recognized, the longest-lived of which are 183Re with a half-life of 70 days, 184Re with a half-life of 38 days, 186Re with a half-life of 3.7186 days, 182Re with a half-life of 64.0 hours, and 189Re with a half-life of 24.3 hours. There are also numerous isomers, the longest-lived of which are 186mRe with a half-life of 200,000 years and 184mRe with a half-life of 177.25 days. All others have half-lives less than a day.

List of isotopes

 * rowspan=2|159Re
 * rowspan=2 style="text-align:right" | 75
 * rowspan=2 style="text-align:right" | 84
 * rowspan=2|
 * rowspan=2|21(4) μs
 * p (92.5%)
 * 158W
 * rowspan=2|(11/2−)
 * rowspan=2|
 * rowspan=2|
 * α (7.5%)
 * 155Ta
 * rowspan=2|160Re
 * rowspan=2 style="text-align:right" | 75
 * rowspan=2 style="text-align:right" | 85
 * rowspan=2|159.98212(43)#
 * rowspan=2|611(7) μs
 * p (89%)
 * 159W
 * rowspan=2|(2−)
 * rowspan=2|
 * rowspan=2|
 * α (11%)
 * 156Ta
 * style="text-indent:1em" | 160mRe
 * colspan="3" style="text-indent:2em" | 185(21)# keV
 * 2.8(1) μs
 * IT
 * 160Re
 * (9+)
 * 161Re
 * style="text-align:right" | 75
 * style="text-align:right" | 86
 * 160.97759(22)
 * 0.37(4) ms
 * p
 * 160W
 * 1/2+
 * style="text-indent:1em" | 161mRe
 * colspan="3" style="text-indent:2em" | 123.8(13) keV
 * 15.6(9) ms
 * α
 * 157Ta
 * 11/2−
 * rowspan=2|162Re
 * rowspan=2 style="text-align:right" | 75
 * rowspan=2 style="text-align:right" | 87
 * rowspan=2|161.97600(22)#
 * rowspan=2|107(13) ms
 * α (94%)
 * 158Ta
 * rowspan=2|(2−)
 * rowspan=2|
 * rowspan=2|
 * β+ (6%)
 * 162W
 * rowspan=2 style="text-indent:1em" | 162mRe
 * rowspan=2 colspan="3" style="text-indent:2em" | 173(10) keV
 * rowspan=2|77(9) ms
 * α (91%)
 * 158Ta
 * rowspan=2|(9+)
 * rowspan=2|
 * rowspan=2|
 * β+ (9%)
 * 162W
 * rowspan=2|163Re
 * rowspan=2 style="text-align:right" | 75
 * rowspan=2 style="text-align:right" | 88
 * rowspan=2|162.972081(21)
 * rowspan=2|390(70) ms
 * β+ (68%)
 * 163W
 * rowspan=2|(1/2+)
 * rowspan=2|
 * rowspan=2|
 * α (32%)
 * 159Ta
 * rowspan=2 style="text-indent:1em" | 163mRe
 * rowspan=2 colspan="3" style="text-indent:2em" | 115(4) keV
 * rowspan=2|214(5) ms
 * α (66%)
 * 159Ta
 * rowspan=2|(11/2−)
 * rowspan=2|
 * rowspan=2|
 * β+ (34%)
 * 163W
 * rowspan=2|164Re
 * rowspan=2 style="text-align:right" | 75
 * rowspan=2 style="text-align:right" | 89
 * rowspan=2|163.97032(17)#
 * rowspan=2|0.53(23) s
 * α (58%)
 * 160Ta
 * rowspan=2|high
 * rowspan=2|
 * rowspan=2|
 * β+ (42%)
 * 164W
 * style="text-indent:1em" | 164mRe
 * colspan="3" style="text-indent:2em" | 120(120)# keV
 * 530(230) ms
 * (2#)−
 * rowspan=2|165Re
 * rowspan=2 style="text-align:right" | 75
 * rowspan=2 style="text-align:right" | 90
 * rowspan=2|164.967089(30)
 * rowspan=2|1# s
 * β+
 * 165W
 * rowspan=2|1/2+#
 * rowspan=2|
 * rowspan=2|
 * α
 * 161Ta
 * rowspan=2 style="text-indent:1em" | 165mRe
 * rowspan=2 colspan="3" style="text-indent:2em" | 47(26) keV
 * rowspan=2|2.1(3) s
 * β+ (87%)
 * 165W
 * rowspan=2|11/2−#
 * rowspan=2|
 * rowspan=2|
 * α (13%)
 * 161Ta
 * rowspan=2|166Re
 * rowspan=2 style="text-align:right" | 75
 * rowspan=2 style="text-align:right" | 91
 * rowspan=2|165.96581(9)#
 * rowspan=2|2# s
 * β+
 * 166W
 * rowspan=2|2−#
 * rowspan=2|
 * rowspan=2|
 * α
 * 162Ta
 * rowspan=2|167Re
 * rowspan=2 style="text-align:right" | 75
 * rowspan=2 style="text-align:right" | 92
 * rowspan=2|166.96260(6)#
 * rowspan=2|3.4(4) s
 * α
 * 163Ta
 * rowspan=2|9/2−#
 * rowspan=2|
 * rowspan=2|
 * β+
 * 167W
 * rowspan=2 style="text-indent:1em" | 167mRe
 * rowspan=2 colspan="3" style="text-indent:2em" | 130(40)# keV
 * rowspan=2|5.9(3) s
 * β+ (99.3%)
 * 167W
 * rowspan=2|1/2+#
 * rowspan=2|
 * rowspan=2|
 * α (.7%)
 * 163Ta
 * rowspan=2|168Re
 * rowspan=2 style="text-align:right" | 75
 * rowspan=2 style="text-align:right" | 93
 * rowspan=2|167.96157(3)
 * rowspan=2|4.4(1) s
 * β+ (99.99%)
 * 168W
 * rowspan=2|(5+, 6+, 7+)
 * rowspan=2|
 * rowspan=2|
 * α (.005%)
 * 164Ta
 * style="text-indent:1em" | 168mRe
 * colspan="3" style="text-indent:2em" | non-exist
 * 6.6(15) s
 * rowspan=2|169Re
 * rowspan=2 style="text-align:right" | 75
 * rowspan=2 style="text-align:right" | 94
 * rowspan=2|168.95879(3)
 * rowspan=2|8.1(5) s
 * β+ (99.99%)
 * 169W
 * rowspan=2|9/2−#
 * rowspan=2|
 * rowspan=2|
 * α (.005%)
 * 165Ta
 * rowspan=2 style="text-indent:1em" | 169mRe
 * rowspan=2 colspan="3" style="text-indent:2em" | 145(29) keV
 * rowspan=2|15.1(15) s
 * β+ (99.8%)
 * 169W
 * rowspan=2|1/2+#
 * rowspan=2|
 * rowspan=2|
 * α (.2%)
 * 164Ta
 * rowspan=2|170Re
 * rowspan=2 style="text-align:right" | 75
 * rowspan=2 style="text-align:right" | 95
 * rowspan=2|169.958220(28)
 * rowspan=2|9.2(2) s
 * β+ (99.99%)
 * 170W
 * rowspan=2|(5+)
 * rowspan=2|
 * rowspan=2|
 * α (.01%)
 * 166Ta
 * 171Re
 * style="text-align:right" | 75
 * style="text-align:right" | 96
 * 170.95572(3)
 * 15.2(4) s
 * β+
 * 171W
 * (9/2−)
 * 172Re
 * style="text-align:right" | 75
 * style="text-align:right" | 97
 * 171.95542(6)
 * 15(3) s
 * β+
 * 172W
 * (5)
 * style="text-indent:1em" | 172mRe
 * colspan="3" style="text-indent:2em" | 0(100)# keV
 * 55(5) s
 * β+
 * 172W
 * (2)
 * 173Re
 * style="text-align:right" | 75
 * style="text-align:right" | 98
 * 172.95324(3)
 * 1.98(26) min
 * β+
 * 173W
 * (5/2−)
 * 174Re
 * style="text-align:right" | 75
 * style="text-align:right" | 99
 * 173.95312(3)
 * 2.40(4) min
 * β+
 * 174W
 * 175Re
 * style="text-align:right" | 75
 * style="text-align:right" | 100
 * 174.95138(3)
 * 5.89(5) min
 * β+
 * 175W
 * (5/2−)
 * 176Re
 * style="text-align:right" | 75
 * style="text-align:right" | 101
 * 175.95162(3)
 * 5.3(3) min
 * β+
 * 176W
 * 3+
 * 177Re
 * style="text-align:right" | 75
 * style="text-align:right" | 102
 * 176.95033(3)
 * 14(1) min
 * β+
 * 177W
 * 5/2−
 * style="text-indent:1em" | 177mRe
 * colspan="3" style="text-indent:2em" | 84.71(10) keV
 * 50(10) μs
 * 5/2+
 * 178Re
 * style="text-align:right" | 75
 * style="text-align:right" | 103
 * 177.95099(3)
 * 13.2(2) min
 * β+
 * 178W
 * (3+)
 * 179Re
 * style="text-align:right" | 75
 * style="text-align:right" | 104
 * 178.949988(26)
 * 19.5(1) min
 * β+
 * 179W
 * (5/2)+
 * style="text-indent:1em" | 179m1Re
 * colspan="3" style="text-indent:2em" | 65.39(9) keV
 * 95(25) μs
 * (5/2−)
 * style="text-indent:1em" | 179m2Re
 * colspan="3" style="text-indent:2em" | 1684.59(14)+Y keV
 * >0.4 μs
 * (23/2+)
 * 180Re
 * style="text-align:right" | 75
 * style="text-align:right" | 105
 * 179.950789(23)
 * 2.44(6) min
 * β+
 * 180W
 * (1)−
 * 181Re
 * style="text-align:right" | 75
 * style="text-align:right" | 106
 * 180.950068(14)
 * 19.9(7) h
 * β+
 * 181W
 * 5/2+
 * 182Re
 * style="text-align:right" | 75
 * style="text-align:right" | 107
 * 181.95121(11)
 * 64.0(5) h
 * β+
 * 182W
 * 7+
 * style="text-indent:1em" | 182m1Re
 * colspan="3" style="text-indent:2em" | 60(100) keV
 * 12.7(2) h
 * β+
 * 182W
 * 2+
 * style="text-indent:1em" | 182m2Re
 * colspan="3" style="text-indent:2em" | 235.736(10)+X keV
 * 585(21) ns
 * 2−
 * style="text-indent:1em" | 182m3Re
 * colspan="3" style="text-indent:2em" | 461.3(1)+X keV
 * 0.78(9) μs
 * (4−)
 * 183Re
 * style="text-align:right" | 75
 * style="text-align:right" | 108
 * 182.950820(9)
 * 70.0(14) d
 * EC
 * 183W
 * 5/2+
 * style="text-indent:1em" | 183mRe
 * colspan="3" style="text-indent:2em" | 1907.6(3) keV
 * 1.04(4) ms
 * IT
 * 183Re
 * (25/2+)
 * 184Re
 * style="text-align:right" | 75
 * style="text-align:right" | 109
 * 183.952521(5)
 * 35.4(7) d
 * β+
 * 184W
 * 3(−)
 * rowspan=2 style="text-indent:1em" | 184mRe
 * rowspan=2 colspan="3" style="text-indent:2em" | 188.01(4) keV
 * rowspan=2|177.25(7) d
 * IT (75.4%)
 * 184Re
 * rowspan=2|8(+)
 * rowspan=2|
 * rowspan=2|
 * β+ (24.6%)
 * 184W
 * 185Re
 * style="text-align:right" | 75
 * style="text-align:right" | 110
 * 184.9529550(13)
 * colspan=3 align=center|Observationally Stable
 * 5/2+
 * 0.3740(2)
 * style="text-indent:1em" | 185mRe
 * colspan="3" style="text-indent:2em" | 2124(2) keV
 * 123(23) ns
 * (21/2)
 * rowspan=2|186Re
 * rowspan=2 style="text-align:right" | 75
 * rowspan=2 style="text-align:right" | 111
 * rowspan=2|185.9549861(13)
 * rowspan=2|3.7186(5) d
 * β− (93.1%)
 * 186Os
 * rowspan=2|1−
 * rowspan=2|
 * rowspan=2|
 * EC (6.9%)
 * 186W
 * rowspan=2 style="text-indent:1em" | 186mRe
 * rowspan=2 colspan="3" style="text-indent:2em" | 149(7) keV
 * rowspan=2|2.0(5)×105 y
 * IT (90%)
 * 186Re
 * rowspan=2|(8+)
 * rowspan=2|
 * rowspan=2|
 * β− (10%)
 * 186Os
 * 187Re
 * style="text-align:right" | 75
 * style="text-align:right" | 112
 * 186.9557531(15)
 * 4.12(2)×1010 y
 * β−
 * 187Os
 * 5/2+
 * 0.6260(2)
 * 188Re
 * style="text-align:right" | 75
 * style="text-align:right" | 113
 * 187.9581144(15)
 * 17.0040(22) h
 * β−
 * 188Os
 * 1−
 * style="text-indent:1em" | 188mRe
 * colspan="3" style="text-indent:2em" | 172.069(9) keV
 * 18.59(4) min
 * IT
 * 188Re
 * (6)−
 * 189Re
 * style="text-align:right" | 75
 * style="text-align:right" | 114
 * 188.959229(9)
 * 24.3(4) h
 * β−
 * 189Os
 * 5/2+
 * 190Re
 * style="text-align:right" | 75
 * style="text-align:right" | 115
 * 189.96182(16)
 * 3.1(3) min
 * β−
 * 190Os
 * (2)−
 * rowspan=2 style="text-indent:1em" | 190mRe
 * rowspan=2 colspan="3" style="text-indent:2em" | 210(50) keV
 * rowspan=2|3.2(2) h
 * β− (54.4%)
 * 190Os
 * rowspan=2|(6−)
 * rowspan=2|
 * rowspan=2|
 * IT (45.6%)
 * 190Re
 * 191Re
 * style="text-align:right" | 75
 * style="text-align:right" | 116
 * 190.963125(11)
 * 9.8(5) min
 * β−
 * 191Os
 * (3/2+, 1/2+)
 * 192Re
 * style="text-align:right" | 75
 * style="text-align:right" | 117
 * 191.96596(21)#
 * 16(1) s
 * β−
 * 192Os
 * 193Re
 * style="text-align:right" | 75
 * style="text-align:right" | 118
 * 192.96747(21)#
 * 30# s [>300 ns]
 * 5/2+#
 * 194Re
 * style="text-align:right" | 75
 * style="text-align:right" | 119
 * 193.97042(32)#
 * 2# s [>300 ns]
 * 184Re
 * style="text-align:right" | 75
 * style="text-align:right" | 109
 * 183.952521(5)
 * 35.4(7) d
 * β+
 * 184W
 * 3(−)
 * rowspan=2 style="text-indent:1em" | 184mRe
 * rowspan=2 colspan="3" style="text-indent:2em" | 188.01(4) keV
 * rowspan=2|177.25(7) d
 * IT (75.4%)
 * 184Re
 * rowspan=2|8(+)
 * rowspan=2|
 * rowspan=2|
 * β+ (24.6%)
 * 184W
 * 185Re
 * style="text-align:right" | 75
 * style="text-align:right" | 110
 * 184.9529550(13)
 * colspan=3 align=center|Observationally Stable
 * 5/2+
 * 0.3740(2)
 * style="text-indent:1em" | 185mRe
 * colspan="3" style="text-indent:2em" | 2124(2) keV
 * 123(23) ns
 * (21/2)
 * rowspan=2|186Re
 * rowspan=2 style="text-align:right" | 75
 * rowspan=2 style="text-align:right" | 111
 * rowspan=2|185.9549861(13)
 * rowspan=2|3.7186(5) d
 * β− (93.1%)
 * 186Os
 * rowspan=2|1−
 * rowspan=2|
 * rowspan=2|
 * EC (6.9%)
 * 186W
 * rowspan=2 style="text-indent:1em" | 186mRe
 * rowspan=2 colspan="3" style="text-indent:2em" | 149(7) keV
 * rowspan=2|2.0(5)×105 y
 * IT (90%)
 * 186Re
 * rowspan=2|(8+)
 * rowspan=2|
 * rowspan=2|
 * β− (10%)
 * 186Os
 * 187Re
 * style="text-align:right" | 75
 * style="text-align:right" | 112
 * 186.9557531(15)
 * 4.12(2)×1010 y
 * β−
 * 187Os
 * 5/2+
 * 0.6260(2)
 * 188Re
 * style="text-align:right" | 75
 * style="text-align:right" | 113
 * 187.9581144(15)
 * 17.0040(22) h
 * β−
 * 188Os
 * 1−
 * style="text-indent:1em" | 188mRe
 * colspan="3" style="text-indent:2em" | 172.069(9) keV
 * 18.59(4) min
 * IT
 * 188Re
 * (6)−
 * 189Re
 * style="text-align:right" | 75
 * style="text-align:right" | 114
 * 188.959229(9)
 * 24.3(4) h
 * β−
 * 189Os
 * 5/2+
 * 190Re
 * style="text-align:right" | 75
 * style="text-align:right" | 115
 * 189.96182(16)
 * 3.1(3) min
 * β−
 * 190Os
 * (2)−
 * rowspan=2 style="text-indent:1em" | 190mRe
 * rowspan=2 colspan="3" style="text-indent:2em" | 210(50) keV
 * rowspan=2|3.2(2) h
 * β− (54.4%)
 * 190Os
 * rowspan=2|(6−)
 * rowspan=2|
 * rowspan=2|
 * IT (45.6%)
 * 190Re
 * 191Re
 * style="text-align:right" | 75
 * style="text-align:right" | 116
 * 190.963125(11)
 * 9.8(5) min
 * β−
 * 191Os
 * (3/2+, 1/2+)
 * 192Re
 * style="text-align:right" | 75
 * style="text-align:right" | 117
 * 191.96596(21)#
 * 16(1) s
 * β−
 * 192Os
 * 193Re
 * style="text-align:right" | 75
 * style="text-align:right" | 118
 * 192.96747(21)#
 * 30# s [>300 ns]
 * 5/2+#
 * 194Re
 * style="text-align:right" | 75
 * style="text-align:right" | 119
 * 193.97042(32)#
 * 2# s [>300 ns]
 * rowspan=2|(6−)
 * rowspan=2|
 * rowspan=2|
 * IT (45.6%)
 * 190Re
 * 191Re
 * style="text-align:right" | 75
 * style="text-align:right" | 116
 * 190.963125(11)
 * 9.8(5) min
 * β−
 * 191Os
 * (3/2+, 1/2+)
 * 192Re
 * style="text-align:right" | 75
 * style="text-align:right" | 117
 * 191.96596(21)#
 * 16(1) s
 * β−
 * 192Os
 * 193Re
 * style="text-align:right" | 75
 * style="text-align:right" | 118
 * 192.96747(21)#
 * 30# s [>300 ns]
 * 5/2+#
 * 194Re
 * style="text-align:right" | 75
 * style="text-align:right" | 119
 * 193.97042(32)#
 * 2# s [>300 ns]
 * style="text-align:right" | 118
 * 192.96747(21)#
 * 30# s [>300 ns]
 * 5/2+#
 * 194Re
 * style="text-align:right" | 75
 * style="text-align:right" | 119
 * 193.97042(32)#
 * 2# s [>300 ns]
 * 194Re
 * style="text-align:right" | 75
 * style="text-align:right" | 119
 * 193.97042(32)#
 * 2# s [>300 ns]

Rhenium-186
Radiopharmaceutical.