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 (4.16×10¹⁰ 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 35.4 days, ¹⁸⁶Re with a half-life of 3.7185 days, ¹⁸²Re with a half-life of 64.2 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

|-id=Rhenium-159 | ¹⁵⁹Re | style="text-align:right" | 75 | style="text-align:right" | 84 | 158.98411(33)# | 40#&nbsp;μs | | | 1/2+# | | |-id=Rhenium-159m | rowspan=2 style="text-indent:1em" | ^159mRe | rowspan=2 colspan="3" style="text-indent:2em" | 210(50)#&nbsp;keV | rowspan=2|20(4)&nbsp;μs | p (92.5%) | ¹⁵⁸W | rowspan=2|(11/2−) | rowspan=2| | rowspan=2| |- | α (7.5%) | ¹⁵⁵Ta |-id=Rhenium-160 | rowspan=2|¹⁶⁰Re | rowspan=2 style="text-align:right" | 75 | rowspan=2 style="text-align:right" | 85 | rowspan=2|159.98188(32)# | rowspan=2|611(7)&nbsp;μs | p (89%) | ¹⁵⁹W | rowspan=2|(4−) | rowspan=2| | rowspan=2| |- | α (11%) | ¹⁵⁶Ta |-id=Rhenium-160m | style="text-indent:1em" | ^160mRe | colspan="3" style="text-indent:2em" | 177(15)&nbsp;keV | 2.8(1)&nbsp;μs | IT | ¹⁶⁰Re | (9+) | | |-id=Rhenium-161 | ¹⁶¹Re | style="text-align:right" | 75 | style="text-align:right" | 86 | 160.97762(16) | 440(1)&nbsp;μs | p | ¹⁶⁰W | 1/2+ | | |-id=Rhenium-161m | rowspan=2 style="text-indent:1em" | ^161mRe | rowspan=2 colspan="3" style="text-indent:2em" | 123.7(13)&nbsp;keV | rowspan=2|14.7(3)&nbsp;ms | α (93.0%) | ¹⁵⁷Ta | rowspan=2|11/2− | rowspan=2| | rowspan=2| |- | p (7.0%) | ¹⁶⁰W |-id=Rhenium-162 | rowspan=2|¹⁶²Re | rowspan=2 style="text-align:right" | 75 | rowspan=2 style="text-align:right" | 87 | rowspan=2|161.97590(22)# | rowspan=2|107(13)&nbsp;ms | α (94%) | ¹⁵⁸Ta | rowspan=2|(2)− | rowspan=2| | rowspan=2| |- | β⁺ (6%) | ¹⁶²W |-id=Rhenium-162m | rowspan=2 style="text-indent:1em" | ^162mRe | rowspan=2 colspan="3" style="text-indent:2em" | 175(9)&nbsp;keV | rowspan=2|77(9)&nbsp;ms | α (91%) | ¹⁵⁸Ta | rowspan=2|(9)+ | rowspan=2| | rowspan=2| |- | β⁺ (9%) | ¹⁶²W |-id=Rhenium-163 | rowspan=2|¹⁶³Re | rowspan=2 style="text-align:right" | 75 | rowspan=2 style="text-align:right" | 88 | rowspan=2|162.972085(20) | rowspan=2|390(70)&nbsp;ms | β⁺ (68%) | ¹⁶³W | rowspan=2|1/2+ | rowspan=2| | rowspan=2| |- | α (32%) | ¹⁵⁹Ta |-id=Rhenium-163m | rowspan=2 style="text-indent:1em" | ^163mRe | rowspan=2 colspan="3" style="text-indent:2em" | 120(5)&nbsp;keV | rowspan=2|214(5)&nbsp;ms | α (66%) | ¹⁵⁹Ta | rowspan=2|11/2− | rowspan=2| | rowspan=2| |- | β⁺ (34%) | ¹⁶³W |-id=Rhenium-164 | rowspan=2|¹⁶⁴Re | rowspan=2 style="text-align:right" | 75 | rowspan=2 style="text-align:right" | 89 | rowspan=2|163.970507(59) | rowspan=2|719(89)&nbsp;ms | α (?%) | ¹⁶⁰Ta | rowspan=2|(2)− | rowspan=2| | rowspan=2| |- | β⁺ (?%) | ¹⁶⁴W |-id=Rhenium-164m | rowspan=2 style="text-indent:1em" | ^164mRe | rowspan=2 colspan="3" style="text-indent:2em" | −50(250)&nbsp;keV | rowspan=2|890(130)&nbsp;ms | β⁺ (97%) | ¹⁶⁴W | rowspan=2|(9,10)+ | rowspan=2| | rowspan=2| |- | α (3%) | ¹⁶⁰Ta |-id=Rhenium-165 | rowspan=2|¹⁶⁵Re | rowspan=2 style="text-align:right" | 75 | rowspan=2 style="text-align:right" | 90 | rowspan=2|164.967086(25) | rowspan=2|1.6(6)&nbsp;s | β⁺ (86%) | ¹⁶⁵W | rowspan=2|(1/2+) | rowspan=2| | rowspan=2| |- | α (14%) | ¹⁶¹Ta |-id=Rhenium-165m | rowspan=2 style="text-indent:1em" | ^165mRe | rowspan=2 colspan="3" style="text-indent:2em" | 28(22)&nbsp;keV | rowspan=2|1.74(6)&nbsp;s | β⁺ (87%) | ¹⁶⁵W | rowspan=2|(11/2−) | rowspan=2| | rowspan=2| |- | α (13%) | ¹⁶¹Ta |-id=Rhenium-166 | rowspan=2|¹⁶⁶Re | rowspan=2 style="text-align:right" | 75 | rowspan=2 style="text-align:right" | 91 | rowspan=2|165.965821(95) | rowspan=2|2.25(21)&nbsp;s | β⁺ | ¹⁶⁶W | rowspan=2|(7+) | rowspan=2| | rowspan=2| |- | α | ¹⁶²Ta |-id=Rhenium-167 | rowspan=2|¹⁶⁷Re | rowspan=2 style="text-align:right" | 75 | rowspan=2 style="text-align:right" | 92 | rowspan=2|166.962604(43)# | rowspan=2|3.4(4)&nbsp;s | α (?%) | ¹⁶³Ta | rowspan=2|9/2− | rowspan=2| | rowspan=2| |- | β⁺ (?%) | ¹⁶⁷W |-id=Rhenium-167m | rowspan=2 style="text-indent:1em" | ^167mRe | rowspan=2 colspan="3" style="text-indent:2em" | 131(13)#&nbsp;keV | rowspan=2|5.9(3)&nbsp;s | β⁺ (?%) | ¹⁶⁷W | rowspan=2|1/2+ | rowspan=2| | rowspan=2| |- | α (?%) | ¹⁶³Ta |-id=Rhenium-168 | rowspan=2|¹⁶⁸Re | rowspan=2 style="text-align:right" | 75 | rowspan=2 style="text-align:right" | 93 | rowspan=2|167.961573(33) | rowspan=2|4.4(1)&nbsp;s | β⁺ | ¹⁶⁸W | rowspan=2|(7+) | rowspan=2| | rowspan=2| |- | α (0.005%) | ¹⁶⁴Ta |-id=Rhenium-169 | rowspan=2|¹⁶⁹Re | rowspan=2 style="text-align:right" | 75 | rowspan=2 style="text-align:right" | 94 | rowspan=2|168.958766(12) | rowspan=2|8.1(5)&nbsp;s | β⁺ | ¹⁶⁹W | rowspan=2|(9/2−) | rowspan=2| | rowspan=2| |- | α (0.005%) | ¹⁶⁵Ta |-id=Rhenium-169m | rowspan=2 style="text-indent:1em" | ^169mRe | rowspan=2 colspan="3" style="text-indent:2em" | 175(13)&nbsp;keV | rowspan=2|15.1(15)&nbsp;s | β⁺ (?%) | ¹⁶⁹W | rowspan=2|(1/2+,3/2+) | rowspan=2| | rowspan=2| |- | α (?%) | ¹⁶⁴Ta |-id=Rhenium-170 | ¹⁷⁰Re | style="text-align:right" | 75 | style="text-align:right" | 95 | 169.958235(12) | >1#&nbsp;s | β⁺ | ¹⁷⁰W | (8−,9−)# | | |-id=Rhenium-170m1 | style="text-indent:1em" | ^170m1Re | colspan="3" style="text-indent:2em" | 73(17)&nbsp;keV | 9.2(2)&nbsp;s | β⁺ | ¹⁷⁰W | (5+) | | |-id=Rhenium-170m2 | style="text-indent:1em" | ^170m2Re | colspan="3" style="text-indent:2em" | 210.1(1)&nbsp;keV | 130(10)&nbsp;ns | IT | ¹⁷⁰Re | (6,7,8,9) | | |-id=Rhenium-171 | ¹⁷¹Re | style="text-align:right" | 75 | style="text-align:right" | 96 | 170.955716(30) | 15.2(4)&nbsp;s | β⁺ | ¹⁷¹W | (9/2−) | | |-id=Rhenium-172 | ¹⁷²Re | style="text-align:right" | 75 | style="text-align:right" | 97 | 171.955376(38) | 55(5)&nbsp;s | β⁺ | ¹⁷²W | (2+) | | |-id=Rhenium-172m | style="text-indent:1em" | ^172mRe | colspan="3" style="text-indent:2em" | 110(50)#&nbsp;keV | 15(3)&nbsp;s | β⁺ | ¹⁷²W | (7+) | | |-id=Rhenium-173 | ¹⁷³Re | style="text-align:right" | 75 | style="text-align:right" | 98 | 172.953243(30) | 2.0(3)&nbsp;min | β⁺ | ¹⁷³W | (5/2−) | | |-id=Rhenium-174 | ¹⁷⁴Re | style="text-align:right" | 75 | style="text-align:right" | 99 | 173.953115(30) | 2.40(4)&nbsp;min | β⁺ | ¹⁷⁴W | 3+# | | |-id=Rhenium-174m | style="text-indent:1em" | ^174mRe | colspan="3" style="text-indent:2em" | 100(50)#&nbsp;keV | 1#&nbsp;min<br />[>1&nbsp;μs] | | | 7+# | | |-id=Rhenium-175 | ¹⁷⁵Re | style="text-align:right" | 75 | style="text-align:right" | 100 | 174.951381(30) | 5.89(5)&nbsp;min | β⁺ | ¹⁷⁵W | 5/2−# | | |-id=Rhenium-176 | ¹⁷⁶Re | style="text-align:right" | 75 | style="text-align:right" | 101 | 175.951623(30) | 5.3(3)&nbsp;min | β⁺ | ¹⁷⁶W | (3+) | | |-id=Rhenium-177 | ¹⁷⁷Re | style="text-align:right" | 75 | style="text-align:right" | 102 | 176.950328(30) | 14(1)&nbsp;min | β⁺ | ¹⁷⁷W | 5/2− | | |-id=Rhenium-177m | style="text-indent:1em" | ^177mRe | colspan="3" style="text-indent:2em" | 84.70(10)&nbsp;keV | 50(10)&nbsp;μs | IT | ¹⁷⁷Re | 5/2+ | | |-id=Rhenium-178 | ¹⁷⁸Re | style="text-align:right" | 75 | style="text-align:right" | 103 | 177.950989(30) | 13.2(2)&nbsp;min | β⁺ | ¹⁷⁸W | (3+) | | |-id=Rhenium-179 | ¹⁷⁹Re | style="text-align:right" | 75 | style="text-align:right" | 104 | 178.949990(26) | 19.5(1)&nbsp;min | β⁺ | ¹⁷⁹W | 5/2+ | | |-id=Rhenium-179m1 | style="text-indent:1em" | ^179m1Re | colspan="3" style="text-indent:2em" | 65.35(9)&nbsp;keV | 95(25)&nbsp;μs | IT | ¹⁷⁹Re | (5/2−) | | |-id=Rhenium-179m2 | style="text-indent:1em" | ^179m2Re | colspan="3" style="text-indent:2em" | 1822(50)#&nbsp;keV | 408(12)&nbsp;ns | IT | ¹⁷⁹Re | (23/2+) | | |-id=Rhenium-179m3 | style="text-indent:1em" | ^179m3Re | colspan="3" style="text-indent:2em" | 5408.0(5)&nbsp;keV | 466(15)&nbsp;μs | IT | ¹⁷⁹Re | (47/2+,49/2+) | | |-id=Rhenium-180 | ¹⁸⁰Re | style="text-align:right" | 75 | style="text-align:right" | 105 | 179.950792(23) | 2.46(3)&nbsp;min | β⁺ | ¹⁸⁰W | (1)− | | |-id=Rhenium-180m1 | style="text-indent:1em" | ^180m1Re | colspan="3" style="text-indent:2em" | 90(30)#&nbsp;keV | >1#&nbsp;μs | IT | ¹⁸⁰Re | (4+,5+) | | |-id=Rhenium-180m2 | style="text-indent:1em" | ^180m2Re | colspan="3" style="text-indent:2em" | 3561(30)#&nbsp;keV | 9.0(7)&nbsp;μs | IT | ¹⁸⁰Re | 21− | | |-id=Rhenium-181 | ¹⁸¹Re | style="text-align:right" | 75 | style="text-align:right" | 106 | 180.950062(13) | 19.9(7)&nbsp;h | β⁺ | ¹⁸¹W | 5/2+ | | |-id=Rhenium-181m1 | style="text-indent:1em" | ^181m1Re | colspan="3" style="text-indent:2em" | 262.91(11)&nbsp;keV | 156.7(19)&nbsp;ns | IT | ¹⁸¹Re | 9/2− | | |-id=Rhenium-181m2 | style="text-indent:1em" | ^181m2Re | colspan="3" style="text-indent:2em" | 1656.37(14)&nbsp;keV | 250(10)&nbsp;ns | IT | ¹⁸¹Re | 21/2− | | |-id=Rhenium-181m3 | style="text-indent:1em" | ^181m3Re | colspan="3" style="text-indent:2em" | 1880.57(16)&nbsp;keV | 11.5(9)&nbsp;μs | IT | ¹⁸¹Re | 25/2+ | | |-id=Rhenium-181m4 | style="text-indent:1em" | ^181m4Re | colspan="3" style="text-indent:2em" | 3869.40(18)&nbsp;keV | 1.2(2)&nbsp;μs | IT | ¹⁸¹Re | (35/2−) | | |-id=Rhenium-182 | ¹⁸²Re | style="text-align:right" | 75 | style="text-align:right" | 107 | 181.95121(11) | 64.2(5)&nbsp;h | β⁺ | ¹⁸²W | 7+ | | |-id=Rhenium-182m1 | style="text-indent:1em" | ^182m1Re | colspan="3" style="text-indent:2em" | 60(100)&nbsp;keV | 14.14(45)&nbsp;h | β⁺ | ¹⁸²W | 2+ | | |-id=Rhenium-182m2 | style="text-indent:1em" | ^182m2Re | colspan="3" style="text-indent:2em" | 296(100)&nbsp;keV | 585(30)&nbsp;ns | IT | ¹⁸²Re | (2)− | | |-id=Rhenium-182m3 | style="text-indent:1em" | ^182m3Re | colspan="3" style="text-indent:2em" | 521(100)&nbsp;keV | 0.78(9)&nbsp;μs | IT | ¹⁸²Re | (4−) | | |-id=Rhenium-183 | ¹⁸³Re | style="text-align:right" | 75 | style="text-align:right" | 108 | 182.9508213(86) | 70.0(14)&nbsp;d | EC | ¹⁸³W | 5/2+ | | |-id=Rhenium-183m | style="text-indent:1em" | ^183mRe | colspan="3" style="text-indent:2em" | 1907.21(15)&nbsp;keV | 1.04(4)&nbsp;ms | IT | ¹⁸³Re | 25/2+ | | |-id=Rhenium-184 | ¹⁸⁴Re | style="text-align:right" | 75 | style="text-align:right" | 109 | 183.9525281(46) | 35.4(7)&nbsp;d | β⁺ | ¹⁸⁴W | 3− | | |-id=Rhenium-184m | rowspan=2 style="text-indent:1em" | ^184mRe | rowspan=2 colspan="3" style="text-indent:2em" | 188.0463(17)&nbsp;keV | rowspan=2|177.25(7)&nbsp;d | IT (74.5%) | ¹⁸⁴Re | rowspan=2|8+ | rowspan=2| | rowspan=2| |- | β⁺ (25.5%) | ¹⁸⁴W |-id=Rhenium-185 | ¹⁸⁵Re | style="text-align:right" | 75 | style="text-align:right" | 110 | 184.95295832(88) | colspan=3 align=center|Observationally stable | 5/2+ | 0.3740(5) | |-id=Rhenium-185m | style="text-indent:1em" | ^185mRe | colspan="3" style="text-indent:2em" | 2124.1(4)&nbsp;keV | 200(4)&nbsp;ns | IT | ¹⁸⁵Re | 25/2+ | | |- | rowspan=2|¹⁸⁶Re | rowspan=2 style="text-align:right" | 75 | rowspan=2 style="text-align:right" | 111 | rowspan=2|185.95498917(88) | rowspan=2|3.7185(5)&nbsp;d | β^− (92.53%) | ¹⁸⁶Os | rowspan=2|1− | rowspan=2| | rowspan=2| |- | EC (7.47%) | ¹⁸⁶W |-id=Rhenium-186m | style="text-indent:1em" | ^186mRe | colspan="3" style="text-indent:2em" | 148.2(5)&nbsp;keV | ~2.0×10⁵&nbsp;y | IT | ¹⁸⁶Re | (8+) | | |-id=Rhenium-187 | ¹⁸⁷Re | style="text-align:right" | 75 | style="text-align:right" | 112 | 186.95575222(79) | 4.16(2)×10¹⁰&nbsp;y | β^− | ¹⁸⁷Os | 5/2+ | 0.6260(5) | |-id=Rhenium-187m1 | style="text-indent:1em" | ^187m1Re | colspan="3" style="text-indent:2em" | 206.2473(10)&nbsp;keV | 555.3(17)&nbsp;ns | IT | ¹⁸⁷Re | 9/2− | | |-id=Rhenium-187m2 | style="text-indent:1em" | ^187m2Re | colspan="3" style="text-indent:2em" | 1682.0(6)&nbsp;keV | 354(62)&nbsp;ns | IT | ¹⁸⁷Re | 21/2+ | | |-id=Rhenium-188 | ¹⁸⁸Re | style="text-align:right" | 75 | style="text-align:right" | 113 | 187.95811366(79) | 17.005(3)&nbsp;h | β^− | ¹⁸⁸Os | 1− | | |-id=Rhenium-188m | style="text-indent:1em" | ^188mRe | colspan="3" style="text-indent:2em" | 172.0848(24)&nbsp;keV | 18.59(4)&nbsp;min | IT | ¹⁸⁸Re | 6− | | |-id=Rhenium-189 | ¹⁸⁹Re | style="text-align:right" | 75 | style="text-align:right" | 114 | 188.9592278(88) | 24.3(4)&nbsp;h | β^− | ¹⁸⁹Os | 5/2+ | | |-id=Rhenium-189m | style="text-indent:1em" | ^189mRe | colspan="3" style="text-indent:2em" | 1770.9(6)&nbsp;keV | 223(14)&nbsp;μs | IT | ¹⁸⁹Re | 29/2+ | | |-id=Rhenium-190 | ¹⁹⁰Re | style="text-align:right" | 75 | style="text-align:right" | 115 | 189.9618001(52) | 3.0(2)&nbsp;min | β^− | ¹⁹⁰Os | (2)− | | |-id=Rhenium-190m | rowspan=2 style="text-indent:1em" | ^190mRe | rowspan=2 colspan="3" style="text-indent:2em" | 204(10)&nbsp;keV | rowspan=2|3.1(2)&nbsp;h | β^− (54.4%) | ¹⁹⁰Os | rowspan=2|(6−) | rowspan=2| | rowspan=2| |- | IT (45.6%) | ¹⁹⁰Re |-id=Rhenium-191 | ¹⁹¹Re | style="text-align:right" | 75 | style="text-align:right" | 116 | 190.963123(11) | 9.8(5)&nbsp;min | β^− | ¹⁹¹Os | (3/2+) | | |-id=Rhenium-191m | style="text-indent:1em" | ^191mRe | colspan="3" style="text-indent:2em" | 1601.5(4)&nbsp;keV | 50.6(35)&nbsp;μs | IT | ¹⁹¹Re | 25/2− | | |-id=Rhenium-192 | ¹⁹²Re | style="text-align:right" | 75 | style="text-align:right" | 117 | 191.966088(76) | 15.4(5)&nbsp;s | β^− | ¹⁹²Os | (0−) | | |-id=Rhenium-192m1 | style="text-indent:1em" | ^192m1Re | colspan="3" style="text-indent:2em" | 159(1)&nbsp;keV | 88(8)&nbsp;μs | IT | ¹⁹²Re | | | |-id=Rhenium-192m2 | style="text-indent:1em" | ^192m2Re | colspan="3" style="text-indent:2em" | 267(10)&nbsp;keV | <500&nbsp;ms | | | | | |-id=Rhenium-193 | ¹⁹³Re | style="text-align:right" | 75 | style="text-align:right" | 118 | 192.967545(42) | 3#&nbsp;min<br />[>300&nbsp;ns] | | | 5/2+# | | |-id=Rhenium-193m | style="text-indent:1em" | ^193mRe | colspan="3" style="text-indent:2em" | 146.0(2)&nbsp;keV | 69(6)&nbsp;μs | IT | ¹⁹³Re | (9/2−) | | |-id=Rhenium-194 | ¹⁹⁴Re | style="text-align:right" | 75 | style="text-align:right" | 119 | 193.97074(22)# | 5(1)&nbsp;s | β^− | ¹⁹⁴Os | 1−# | | |-id=Rhenium-194m1 | style="text-indent:1em" | ^194m1Re | colspan="3" style="text-indent:2em" | 150(50)#&nbsp;keV | 45(18)&nbsp;μs | IT | ¹⁹⁴Re | 4−# | | |-id=Rhenium-194m2 | style="text-indent:1em" | ^194m2Re | colspan="3" style="text-indent:2em" | 285(40)&nbsp;keV | 25(8)&nbsp;s | β^− | ¹⁹⁴Os | 11−# | | |-id=Rhenium-194m3 | style="text-indent:1em" | ^194m3Re | colspan="3" style="text-indent:2em" | 833(33)&nbsp;keV | 100(10)&nbsp;s | β^− | ¹⁹⁴Os | | | |-id=Rhenium-195 | ¹⁹⁵Re | style="text-align:right" | 75 | style="text-align:right" | 120 | 194.97256(32)# | 5(1)&nbsp;s | β^− | ¹⁹⁵Os | 5/2+# | | |-id=Rhenium-196 | ¹⁹⁶Re | style="text-align:right" | 75 | style="text-align:right" | 121 | 195.97600(32)# | 2.4(15)&nbsp;s | β^− | ¹⁹⁶Os | | | |-id=Rhenium-196m | style="text-indent:1em" | ^196mRe | colspan="3" style="text-indent:2em" | 120(40)#&nbsp;keV | 3.6(6)&nbsp;μs | IT | ¹⁹⁶Re | | | |-id=Rhenium-197 | ¹⁹⁷Re | style="text-align:right" | 75 | style="text-align:right" | 122 | 196.97815(32)# | 400#&nbsp;ms<br />[>300&nbsp;ns] | | | 5/2+# | | |-id=Rhenium-198 | ¹⁹⁸Re | style="text-align:right" | 75 | style="text-align:right" | 123 | 197.98176(43)# | 1#&nbsp;s<br />[>300&nbsp;ns] | | | | | |-id=Rhenium-199 | ¹⁹⁹Re | style="text-align:right" | 75 | style="text-align:right" | 124 | 198.98419(43)# | 250#&nbsp;ms<br />[>300&nbsp;ns] | | | 5/2+# | |

Rhenium-186

Rhenium-186 is a beta emitter and radiopharmaceutical that is used to treat glioblastoma, is used in theranostic medicine and has been reported to be used in synoviorthesis.

See also

Daughter products other than rhenium

• Isotopes of osmium
• Isotopes of tungsten
• Isotopes of tantalum

References

• Isotope masses from:
• Isotopic compositions and standard atomic masses from:
• Half-life, spin, and isomer data selected from the following sources.