자연계에 존재하는 레늄의 동위 원소는 185Re, 187Re이 있다. 이 중 185Re은 안정 동위 원소이며, 187Re은 방사성 동위 원소인데 187Re이 자연계에서 존재비가 62.6%로 방사성 동위 원소의 존재비가 더 많다. 187Re은 오스뮴-레늄 연대 측정에 쓰인다. 핵자수 Z(p) N(n) 동위 원소 질량 (u) 반감기 붕괴방식ε 전자 포획IT 이성질핵 전이 붕괴 생성동위 원소 핵스핀 자연계에 존재하는동위 원소범위(몰 분율) 자연계에 존재하는최대 범위(몰 분율) 들뜬 에너지 160Re 75 85 159.98212(43)# 860(120) µs0.82(+15-9) ms p (91%) 159W (2-) α (9%) 156Ta 161Re 75 86 160.97759(22) 0.37(4) ms p 160W 1/2+ 161mRe 123.8(13) keV 15.6(9) ms α 157Ta 11/2- 162Re 75 87 161.97600(22)# 107(13) ms α (94%) 158Ta (2-) β+ (6%) 162W 162mRe 173(10) keV 77(9) ms α (91%) 158Ta (9+) β+ (9%) 162W 163Re 75 88 162.972081(21) 390(70) ms β+ (68%) 163W (1/2+) α (32%) 159Ta 163mRe 115(4) keV 214(5) ms α (66%) 159Ta (11/2-) β+ (34%) 163W 164Re 75 89 163.97032(17)# 0.53(23) s α (58%) 160Ta high β+ (42%) 164W 164mRe 120(120)# keV 530(230) ms (2#)- 165Re 75 90 164.967089(30) 1# s β+ 165W 1/2+# α 161Ta 165mRe 47(26) keV 2.1(3) s β+ (87%) 165W 11/2-# α (13%) 161Ta 166Re 75 91 165.96581(9)# 2# s β+ 166W 2-# α 162Ta 167Re 75 92 166.96260(6)# 3.4(4) s α 163Ta 9/2-# β+ 167W 167mRe 130(40)# keV 5.9(3) s β+ (99.3%) 167W 1/2+# α (0.7%) 163Ta 168Re 75 93 167.96157(3) 4.4(1) s β+ (99.99%) 168W (5+,6+,7+) α (0.005%) 164Ta 168mRe non-exist 6.6(15) s 169Re 75 94 168.95879(3) 8.1(5) s β+ (99.99%) 169W 9/2-# α (0.005%) 165Ta 169mRe 145(29) keV 15.1(15) s β+ (99.8%) 169W 1/2+# α (0.2%) 164Ta 170Re 75 95 169.958220(28) 9.2(2) s β+ (99.99%) 170W (5+) α (0.01%) 166Ta 171Re 75 96 170.95572(3) 15.2(4) s β+ 171W (9/2-) 172Re 75 97 171.95542(6) 15(3) s β+ 172W (5) 172mRe 0(100)# keV 55(5) s β+ 172W (2) 173Re 75 98 172.95324(3) 1.98(26) min β+ 173W (5/2-) 174Re 75 99 173.95312(3) 2.40(4) min β+ 174W 175Re 75 100 174.95138(3) 5.89(5) min β+ 175W (5/2-) 176Re 75 101 175.95162(3) 5.3(3) min β+ 176W 3+ 177Re 75 102 176.95033(3) 14(1) min β+ 177W 5/2- 177mRe 84.71(10) keV 50(10) µs 5/2+ 178Re 75 103 177.95099(3) 13.2(2) min β+ 178W (3+) 179Re 75 104 178.949988(26) 19.5(1) min β+ 179W (5/2)+ 179m1Re 65.39(9) keV 95(25) µs (5/2-) 179m2Re 1684.59(14)+Y keV >0.4 µs (23/2+) 180Re 75 105 179.950789(23) 2.44(6) min β+ 180W (1)- 181Re 75 106 180.950068(14) 19.9(7) h β+ 181W 5/2+ 182Re 75 107 181.95121(11) 64.0(5) h β+ 182W 7+ 182m1Re 60(100) keV 12.7(2) h β+ 182W 2+ 182m2Re 235.736(10)+X keV 585(21) ns 2- 182m3Re 461.3(1)+X keV 0.78(9) µs (4-) 183Re 75 108 182.950820(9) 70.0(14) d ε 183W 5/2+ 183mRe 1907.6(3) keV 1.04(4) ms IT 183Re (25/2+) 184Re 75 109 183.952521(5) 38.0(5) d β+ 184W 3(-) 184mRe 188.01(4) keV 169(8) d IT (75.4%) 184Re 8(+) β+ (24.6%) 184W 185Re 75 110 184.9529550(13) 안정 5/2+ 0.3740(2) 185mRe 2124(2) keV 123(23) ns (21/2) 186Re 75 111 185.9549861(13) 3.7186(5) d β- (93.1%) 186Os 1- ε (6.9%) 186W 186mRe 149(7) keV 2.0(5)×105 a IT (90%) 186Re (8+) β- (10%) 186Os 187Re 75 112 186.9557531(15) 41.2(2)×109 a β- (99.99%) 187Os 5/2+ 0.6260(2) α (10−4%) 183Ta 188Re 75 113 187.9581144(15) 17.0040(22) h β- 188Os 1- 188mRe 172.069(9) keV 18.59(4) min IT 188Re (6)- 189Re 75 114 188.959229(9) 24.3(4) h β- 189Os 5/2+ 190Re 75 115 189.96182(16) 3.1(3) min β- 190Os (2)- 190mRe 210(50) keV 3.2(2) h β- (54.4%) 190Os (6-) IT (45.6%) 190Re 191Re 75 116 190.963125(11) 9.8(5) min β- 191Os (3/2+,1/2+) 192Re 75 117 191.96596(21)# 16(1) s β- 192Os 193Re 75 118 192.96747(21)# 30# s >300 ns 5/2+# 194Re 75 119 193.97042(32)# 2# s >300 ns 동위 원소 분류:원소별 동위 원소 목록