Table
| nuclide symbol |
Z(p) | N(n) | isotopic mass (u) |
half-life | decay mode(s) |
daughter isotopes |
nuclear spin |
representative isotopic composition (mole fraction) |
range of natural variation (mole fraction) |
|---|---|---|---|---|---|---|---|---|---|
| excitation energy | |||||||||
| 228Pu | 94 | 134 | 228.03874(3) | 1.1(+20-5) s | α (99.9%) | 224U | 0+ | ||
| β+ (.1%) | 228Np | ||||||||
| 229Pu | 94 | 135 | 229.04015(6) | 120(50) s | α | 225U | 3/2+# | ||
| 230Pu | 94 | 136 | 230.039650(16) | 1.70(17) min | α | 226U | 0+ | ||
| β+ (rare) | 230Np | ||||||||
| 231Pu | 94 | 137 | 231.041101(28) | 8.6(5) min | β+ | 231Np | 3/2+# | ||
| α (rare) | 227U | ||||||||
| 232Pu | 94 | 138 | 232.041187(19) | 33.7(5) min | EC (89%) | 232Np | 0+ | ||
| α (11%) | 228U | ||||||||
| 233Pu | 94 | 139 | 233.04300(5) | 20.9(4) min | β+ (99.88%) | 233Np | 5/2+# | ||
| α (.12%) | 229U | ||||||||
| 234Pu | 94 | 140 | 234.043317(7) | 8.8(1) h | EC (94%) | 234Np | 0+ | ||
| α (6%) | 230U | ||||||||
| 235Pu | 94 | 141 | 235.045286(22) | 25.3(5) min | β+ (99.99%) | 235Np | (5/2+) | ||
| α (.0027%) | 231U | ||||||||
| 236Pu | 94 | 142 | 236.0460580(24) | 2.858(8) a | α | 232U | 0+ | ||
| SF (1.37×10−7%) | (various) | ||||||||
| CD (2×10−12%) | 208Pb 28Mg |
||||||||
| β+β+ (rare) | 236U | ||||||||
| 237Pu | 94 | 143 | 237.0484097(24) | 45.2(1) d | EC | 237Np | 7/2- | ||
| α (.0042%) | 233U | ||||||||
| 237m1Pu | 145.544(10) keV | 180(20) ms | IT | 237Pu | 1/2+ | ||||
| 237m2Pu | 2900(250) keV | 1.1(1) µs | |||||||
| 238Pu | 94 | 144 | 238.0495599(20) | 87.7(1) a | α | 234U | 0+ | ||
| SF (1.9×10−7%) | (various) | ||||||||
| CD (1.4×10−14%) | 206Hg 32Si |
||||||||
| CD (6×10−15%) | 180Yb 30Mg 28Mg |
||||||||
| 239Pu | 94 | 145 | 239.0521634(20) | 2.411(3)×104 a | α | 235U | 1/2+ | ||
| SF (3.1×10−10%) | (various) | ||||||||
| 239m1Pu | 391.584(3) keV | 193(4) ns | 7/2- | ||||||
| 239m2Pu | 3100(200) keV | 7.5(10) µs | (5/2+) | ||||||
| 240Pu | 94 | 146 | 240.0538135(20) | 6,561(7) a | α | 236U | 0+ | ||
| SF (5.7×10−6%) | (various) | ||||||||
| CD (1.3×10−13%) | 206Hg 34Si |
||||||||
| 241Pu | 94 | 147 | 241.0568515(20) | 14.290(6) a | β- (99.99%) | 241Am | 5/2+ | ||
| α (.00245%) | 237U | ||||||||
| SF (2.4×10−14%) | (various) | ||||||||
| 241m1Pu | 161.6(1) keV | 0.88(5) µs | 1/2+ | ||||||
| 241m2Pu | 2200(200) keV | 21(3) µs | |||||||
| 242Pu | 94 | 148 | 242.0587426(20) | 3.75(2)×105 a | α | 238U | 0+ | ||
| SF (5.5×10−4%) | (various) | ||||||||
| 243Pu | 94 | 149 | 243.062003(3) | 4.956(3) h | β- | 243Am | 7/2+ | ||
| 243mPu | 383.6(4) keV | 330(30) ns | (1/2+) | ||||||
| 244Pu | 94 | 150 | 244.064204(5) | 8.00(9)×107 a | α (99.88%) | 240U | 0+ | Trace | |
| SF (.123%) | (various) | ||||||||
| β-β- (7.3×10−9%) | 244Cm | ||||||||
| 245Pu | 94 | 151 | 245.067747(15) | 10.5(1) h | β- | 245Am | (9/2-) | ||
| 246Pu | 94 | 152 | 246.070205(16) | 10.84(2) d | β- | 246mAm | 0+ | ||
| 247Pu | 94 | 153 | 247.07407(32)# | 2.27(23) d | β- | 247Am | 1/2+# | ||
Read more about this topic: Isotopes Of Plutonium
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