자연계에 존재하는 로듐의 동위 원소는 1종으로 103Rh이 100% 존재하고 있다. 인공적으로 만들어진 로듐의 동위 원소로는 89Rh부터 122Rh까지인데 이 중에서 101Rh의 반감기가 3.3년으로 가장 길다. 105Rh은 핵분열 생성물의 방사성 로듐 동위 원소들 중 반감기가 35.36일로 가장 길다. 핵자수 Z(p) N(n) 동위 원소 질량 (u) 반감기 붕괴방식IT 핵이성체 전이 붕괴 생성동위 원소 핵스핀 자연계에 존재하는동위 원소범위(몰 분율) 자연계에 존재하는최대 범위(몰 분율) 들뜬 에너지 89Rh 45 44 88.94884(48)# 10# ms>1.5 µs β+ 89Ru 7/2+# 90Rh 45 45 89.94287(54)# 15(7) ms12(+9-4) ms β+ 90Ru 0+# 90mRh 0(500)# keV 1.1(3) s1.0(+3-2) s 9+# 91Rh 45 46 90.93655(43)# 1.74(14) s β+ 91Ru 7/2+# 91mRh 1.46(11) s (1/2-) 92Rh 45 47 91.93198(43)# 4.3(13) s β+ 92Ru (6+) 92mRh 4.66(25) s2.9(+15-8) s (≥6+) 93Rh 45 48 92.92574(43)# 11.9(7) s β+ 93Ru 9/2+# 94Rh 45 49 93.92170(48)# 70.6(6) s β+ (98.2%) 94Ru (2+,4+) β+, p (1.79%) 93Tc 94mRh 300(200)# keV 25.8(2) s β+ 94Ru (8+) 95Rh 45 50 94.91590(16) 5.02(10) min β+ 95Ru (9/2)+ 95mRh 543.3(3) keV 1.96(4) min IT (88%) 95Rh (1/2)- β+ (12%) 95Ru 96Rh 45 51 95.914461(14) 9.90(10) min β+ 96Ru (6+) 96mRh 52.0(1) keV 1.51(2) min IT (60%) 96Rh (3+) β+ (40%) 96Ru 97Rh 45 52 96.91134(4) 30.7(6) min β+ 97Ru 9/2+ 97mRh 258.85(17) keV 46.2(16) min β+ (94.4%) 97Ru 1/2- IT (5.6%) 97Rh 98Rh 45 53 97.910708(13) 8.72(12) min β+ 98Ru (2)+ 98mRh 60(50)# keV 3.6(2) min IT 98Rh (5+) β+ 98Ru 99Rh 45 54 98.908132(8) 16.1(2) d β+ 99Ru 1/2- 99mRh 64.3(4) keV 4.7(1) h β+ (99.83%) 99Ru 9/2+ IT (0.16%) 99Rh 100Rh 45 55 99.908122(20) 20.8(1) h β+ 100Ru 1- 100m1Rh 107.6(2) keV 4.6(2) min IT (98.3%) 100Rh (5+) β+ (1.7%) 100Ru 100m2Rh 74.78(2) keV 214.0(20) ns (2)+ 100m3Rh 112.0+X keV 130(10) ns (7+) 101Rh 45 56 100.906164(18) 3.3(3) a ε 101Ru 1/2- 101mRh 157.32(4) keV 4.34(1) d ε (93.6%) 101Ru 9/2+ IT (6.4%) Rh 102Rh 45 57 101.906843(5) 207.0(15) d β+ (80%) 102Ru (1-,2-) β- (20%) 102Pd 102mRh 140.75(8) keV 2.9(10) a β+ (99.77%) 102Ru 6+ IT (0.23%) 102Rh 103Rh 45 58 102.905504(3) 안정 1/2- 1.0000 103mRh 39.756(6) keV 56.114(9) min IT 103Rh 7/2+ 104Rh 45 59 103.906656(3) 42.3(4) s β- (99.55%) 104Pd 1+ β+ (0.449%) 104Ru 104mRh 128.967(4) keV 4.34(3) min 5+ 105Rh 45 60 104.905694(4) 35.36(6) h β- 105Pd 7/2+ 105mRh 129.781(4) keV 42.9(3) s IT 105Rh 1/2- β- 105Pd 106Rh 45 61 105.907287(8) 29.80(8) s β- 106Pd 1+ 106mRh 136(12) keV 131(2) min β- 106Pd (6)+ 107Rh 45 62 106.906748(13) 21.7(4) min β- 107Pd 7/2+ 107mRh 268.36(4) keV >10 µs 1/2- 108Rh 45 63 107.90873(11) 16.8(5) s β- 108Pd 1+ 108mRh -60(110) keV 6.0(3) min β- 108Pd (5)(+#) 109Rh 45 64 108.908737(13) 80(2) s β- 109Pd 7/2+ 110Rh 45 65 109.91114(5) 28.5(15) s β- 110Pd (>3)(+#) 110mRh -60(50) keV 3.2(2) s β- 110Pd 1+ 111Rh 45 66 110.91159(3) 11(1) s β- 111Pd (7/2+) 112Rh 45 67 111.91439(6) 3.45(37) s β- 112Pd 1+ 112mRh 330(70) keV 6.73(15) s β- 112Pd (4,5,6) 113Rh 45 68 112.91553(5) 2.80(12) s β- 113Pd (7/2+) 114Rh 45 69 113.91881(12) 1.85(5) s β- (>99.9%) 114Pd 1+ β-, n (113Pd 114mRh 200(150)# keV 1.85(5) s β- 114Pd (4,5) 115Rh 45 70 114.92033(9) 0.99(5) s β- 115Pd (7/2+)# 116Rh 45 71 115.92406(15) 0.68(6) s β- (>99.9%) 116Pd 1+ β-, n (115Pd 116mRh 200(150)# keV 570(50) ms β- 116Pd (6-) 117Rh 45 72 116.92598(54)# 0.44(4) s β- 117Pd (7/2+)# 118Rh 45 73 117.93007(54)# 310(30) ms β- 118Pd (4-10)(+#) 119Rh 45 74 118.93211(64)# 300# ms>300 ns β- 119Pd 7/2+# 120Rh 45 75 119.93641(64)# 200# ms>300 ns β- 120Pd 121Rh 45 76 120.93872(97)# 100# ms>300 ns β- 121Pd 7/2+# 122Rh 45 77 121.94321(75)# 50# ms>300 ns 동위 원소 분류:원소별 동위 원소 목록