Naturally occurring

rhenium Rhenium is a chemical element with the symbol Re and atomic number 75. It is a silvery-gray, heavy, third-row transition metal in group 7 of the periodic table. With an estimated average concentration of 1 part per billion (ppb), rhenium is ...

(₇₅Re) is 37.4% ¹⁸⁵Re, which is

stable A stable is a building in which livestock, especially horses, are kept. It most commonly means a building that is divided into separate stalls for individual animals and livestock. There are many different types of stables in use today; the ...

(although it is predicted to decay), and 62.6% ¹⁸⁷Re, which is

unstable In numerous fields of study, the component of instability within a system is generally characterized by some of the outputs or internal states growing without bounds. Not all systems that are not stable are unstable; systems can also be mar ...

but has a very long

half-life Half-life (symbol ) is the time required for a quantity (of substance) to reduce to half of its initial value. The term is commonly used in nuclear physics to describe how quickly unstable atoms undergo radioactive decay or how long stable at ...

(4.12×10¹⁰ years). Among elements with a known stable isotope, only

indium Indium is a chemical element with the symbol In and atomic number 49. Indium is the softest metal that is not an alkali metal. It is a silvery-white metal that resembles tin in appearance. It is a post-transition metal that makes up 0.21 parts ...

and

tellurium Tellurium is a chemical element with the symbol Te and atomic number 52. It is a brittle, mildly toxic, rare, silver-white metalloid. Tellurium is chemically related to selenium and sulfur, all three of which are chalcogens. It is occasionally ...

similarly occur with a stable isotope in lower abundance than the long-lived radioactive isotope. There are 33 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 In chemistry, isomers are molecules or polyatomic ions with identical molecular formulae – that is, same number of atoms of each element – but distinct arrangements of atoms in space. Isomerism is existence or possibility of isomers. Iso ...

, 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, ¹⁶⁰Re , rowspan=2 style="text-align:right" , 75 , rowspan=2 style="text-align:right" , 85 , rowspan=2, 159.98212(43)# , rowspan=2, 860(120) μs
.82(+15−9) ms, p (91%) , ¹⁵⁹W , rowspan=2, (2−) , rowspan=2, , rowspan=2, , - , α (9%) , ¹⁵⁶Ta , - , 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 Stable nuclides are nuclides that are not radioactive and so (unlike radionuclides) do not spontaneously undergo radioactive decay. When such nuclides are referred to in relation to specific elements, they are usually termed stable isotopes. Th ...

Believed to undergo α decay to ¹⁸¹Ta , 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 primordial

radionuclide A radionuclide (radioactive nuclide, radioisotope or radioactive isotope) is a nuclide that has excess nuclear energy, making it unstable. This excess energy can be used in one of three ways: emitted from the nucleus as gamma radiation; transfe ...

Used in

rhenium–osmium dating Rhenium–osmium dating is a form of radiometric dating based on the beta decay of the isotope 187 Re to 187 Os. This normally occurs with a half-life of 41.6 × 109 y, but studies using fully ionised 187 Re atoms have found that this can decreas ...

, style="text-align:right" , 75 , style="text-align:right" , 112 , 186.9557531(15) , 41.2(2)×10⁹ yCan undergo Bound-state β⁻ decay with a half-life of 32.9 years when fully ionized , β⁻Theorized to also undergo α decay to ¹⁸³Ta , 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, , , , ,

Rhenium-186

Radiopharmaceutical Radiopharmaceuticals, or medicinal radiocompounds, are a group of pharmaceutical drugs containing radioactive isotopes. Radiopharmaceuticals can be used as diagnostic and therapeutic agents. Radiopharmaceuticals emit radiation themselves, which is ...

References

* Isotope masses from: ** * Isotopic compositions and standard atomic masses from: ** ** * Half-life, spin, and isomer data selected from the following sources. ** ** ** {{Navbox element isotopes Rhenium

Rhenium Rhenium is a chemical element with the symbol Re and atomic number 75. It is a silvery-gray, heavy, third-row transition metal in group 7 of the periodic table. With an estimated average concentration of 1 part per billion (ppb), rhenium is ...