Küriyum izotopları
İzotoplar

| Nüklit | Z | N | İzotop kütlesi (Da) | Yarı ömür | Bozunma türü | Yavru izotop | Spin ve parite |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 233Cm | 96 | 137 | 233.05077(8) | 27(10) s | β+ (%80) | 233Am | 3/2+# |
| 233Cm | 96 | 137 | 233.05077(8) | 27(10) s | α (%20) | 229Pu | 3/2+# |
| 234Cm | 96 | 138 | 234.05016(2) | 52(9) s | β+ (%71) | 234Am | 0+ |
| 234Cm | 96 | 138 | 234.05016(2) | 52(9) s | α (%27) | 230Pu | 0+ |
| 234Cm | 96 | 138 | 234.05016(2) | 52(9) s | KF (%2) | (çeşitli) | 0+ |
| 235Cm | 96 | 139 | 235.05143(22)# | 5# dk | β+ | 235Am | 5/2+# |
| 235Cm | 96 | 139 | 235.05143(22)# | 5# dk | α | 231Pu | 5/2+# |
| 236Cm | 96 | 140 | 236.05141(22)# | 6.8(0.8) dk | β+ (%82) | 236Am | 0+ |
| 236Cm | 96 | 140 | 236.05141(22)# | 6.8(0.8) dk | α (%18) | 232Pu | 0+ |
| 237Cm | 96 | 141 | 237.05290(22)# | 20# dk | β+ | 237Am | 5/2+# |
| 237Cm | 96 | 141 | 237.05290(22)# | 20# dk | α | 233Pu | 5/2+# |
| 238Cm | 96 | 142 | 238.05303(4) | 2.4(1) h | EY (%90) | 238Am | 0+ |
| 238Cm | 96 | 142 | 238.05303(4) | 2.4(1) h | α (%10) | 234Pu | 0+ |
| 239Cm | 96 | 143 | 239.05496(11)# | 2.5(0.4) h | β+ (%99,9) | 239Am | (7/2-) |
| 239Cm | 96 | 143 | 239.05496(11)# | 2.5(0.4) h | α (%0,1) | 235Pu | (7/2-) |
| 240Cm | 96 | 144 | 240.0555295(25) | 27(1) d | α (%99,5) | 236Pu | 0+ |
| 240Cm | 96 | 144 | 240.0555295(25) | 27(1) d | EY (%0,5) | 240Am | 0+ |
| 240Cm | 96 | 144 | 240.0555295(25) | 27(1) d | KF (%3,9×10−6) | (çeşitli) | 0+ |
| 241Cm | 96 | 145 | 241.0576530(23) | 32.8(2) d | EY (%99) | 241Am | 1/2+ |
| 241Cm | 96 | 145 | 241.0576530(23) | 32.8(2) d | α (%1) | 237Pu | 1/2+ |
| 242Cm | 96 | 146 | 242.0588358(20) | 162.8(2) d | α | 238Pu | 0+ |
| 242Cm | 96 | 146 | 242.0588358(20) | 162.8(2) d | KF (%6,33×10−6) | (çeşitli) | 0+ |
| 242Cm | 96 | 146 | 242.0588358(20) | 162.8(2) d | KB (%10−14) | 208Pb 34Si | 0+ |
| 242Cm | 96 | 146 | 242.0588358(20) | 162.8(2) d | β+β+ (nadir) | 242Pu | 0+ |
| 242mCm | 2800(100) keV | 2800(100) keV | 2800(100) keV | 180(70) ns |  |  |  |
| 243Cm | 96 | 147 | 243.0613891(22) | 29.1(1) y | α (%99,71) | 239Pu | 5/2+ |
| 243Cm | 96 | 147 | 243.0613891(22) | 29.1(1) y | EY (%0,29) | 243Am | 5/2+ |
| 243Cm | 96 | 147 | 243.0613891(22) | 29.1(1) y | KF (%5,3×10−9) | (çeşitli) | 5/2+ |
| 243mCm | 87.4(1) keV | 87.4(1) keV | 87.4(1) keV | 1.08(3) µs | İG | 243Cm | 1/2+ |
| 244Cm | 96 | 148 | 244.0627526(20) | 18.10(2) y | α | 240Pu | 0+ |
| 244Cm | 96 | 148 | 244.0627526(20) | 18.10(2) y | KF (%1,34×10−4) | (çeşitli) | 0+ |
| 244m1Cm | 1040.188(12) keV | 1040.188(12) keV | 1040.188(12) keV | 34(2) ms | İG | 244Cm | 6+ |
| 244m2Cm | 1100(900)# keV | 1100(900)# keV | 1100(900)# keV | >500 ns | KF | (çeşitli) |  |
| 245Cm | 96 | 149 | 245.0654912(22) | 8.5(1)×103 y | α | 241Pu | 7/2+ |
| 245Cm | 96 | 149 | 245.0654912(22) | 8.5(1)×103 y | KF (%6,1×10−7) | (çeşitli) | 7/2+ |
| 245mCm | 355.92(10) keV | 355.92(10) keV | 355.92(10) keV | 290(20) ns | İG | 245Cm | 1/2+ |
| 246Cm | 96 | 150 | 246.0672237(22) | 4.76(4)×103 y | α (%99,97) | 242Pu | 0+ |
| 246Cm | 96 | 150 | 246.0672237(22) | 4.76(4)×103 y | KF (%0,0261) | (çeşitli) | 0+ |
| 246mCm | 1179.66(13) keV | 1179.66(13) keV | 1179.66(13) keV | 1.12(0.24) s | İG | 246Cm | 8- |
| 247Cm | 96 | 151 | 247.070354(5) | 1.56(5)×107 y | α | 243Pu | 9/2- |
| 247m1Cm | 227.38(19) keV | 227.38(19) keV | 227.38(19) keV | 26.3(0.3) µs | İG | 247Cm | 5/2+ |
| 247m2Cm | 404.90(3) keV | 404.90(3) keV | 404.90(3) keV | 100.6(0.6) ns | İG | 247Cm | 1/2+ |
| 248Cm | 96 | 152 | 248.072349(5) | 3.48(6)×105 y | α (%91,74) | 244Pu | 0+ |
| 248Cm | 96 | 152 | 248.072349(5) | 3.48(6)×105 y | KF (%8,26) | (çeşitli) | 0+ |
| 248Cm | 96 | 152 | 248.072349(5) | 3.48(6)×105 y | β-β- (nadir) | 248Cf | 0+ |
| 248mCm | 1458.1(1) keV | 1458.1(1) keV | 1458.1(1) keV | 146(18) µs | İG | 248Cm | (8-) |
| 249Cm | 96 | 153 | 249.075953(5) | 64.15(3) dk | β- | 249Bk | 1/2(+) |
| 249mCm | 48.758(17) keV | 48.758(17) keV | 48.758(17) keV | 23 µs | α | 245Pu | (7/2+) |
| 250Cm | 96 | 154 | 250.078357(12) | 8300# y | KF (%74) | (çeşitli) | 0+ |
| 250Cm | 96 | 154 | 250.078357(12) | 8300# y | α (%18) | 246Pu | 0+ |
| 250Cm | 96 | 154 | 250.078357(12) | 8300# y | β- (%8) | 250Bk | 0+ |
| 251Cm | 96 | 155 | 251.082285(24) | 16.8(2) dk | β- | 251Bk | (1/2+) |