鈽沒有穩定同位素。它最穩定的同位素是半衰期 8130 萬年的 244Pu。 圖表 227Pu 94 133 22703947 11 秒 223U 52 rowspan2228Pu rowspan2 styletextalignright 94 rowspan2 styletextalignright 134 rowspan222803874 3 rowspan211 205 秒 999 224U rowspan20 rowspan2 1 228Np 229Pu styletextalignright 94 styletextalignright 135 22904015 6 120 50 秒 225U 32 rowspan2230Pu rowspan2 styletextalignright 94 rowspan2 styletextalignright 136 rowspan2230039650 16 rowspan2170 17 分鐘 226U rowspan20 rowspan2 （不常見） 230Np rowspan2231Pu rowspan2 styletextalignright 94 rowspan2 styletextalignright 137 rowspan2231041101 28 rowspan286 5 分鐘 231Np rowspan232 rowspan2 （不常見） 227U rowspan2232Pu rowspan2 styletextalignright 94 rowspan2 styletextalignright 138 rowspan2232041187 19 rowspan2337 5 分鐘 89 232Np rowspan20 rowspan2 11 228U rowspan2233Pu rowspan2 styletextalignright 94 rowspan2 styletextalignright 139 rowspan223304300 5 rowspan2209 4 分鐘 9988 233Np rowspan252 rowspan2 12 229U rowspan2234Pu rowspan2 styletextalignright 94 rowspan2 styletextalignright 140 rowspan2234043317 7 rowspan288 1 小時 94 234Np rowspan20 rowspan2 6 230U rowspan2235Pu rowspan2 styletextalignright 94 rowspan2 styletextalignright 141 rowspan2235045286 22 rowspan2253 5 分鐘 9999 235Np rowspan252 rowspan2 0027 231U rowspan3 236Pu rowspan3 styletextalignright 94 rowspan3 styletextalignright 142 rowspan3 2360460580 24 rowspan3 2858 8 年 232U rowspan3 0 rowspan3 SF 137107 various 21012 208Pb28Mg rowspan2237Pu rowspan2 styletextalignright 94 rowspan2 styletextalignright 143 rowspan22370484097 24 rowspan2452 1 日 237Np rowspan272 rowspan2 0042 233U styletextindent1em 237m1Pu colspan3 styletextindent2em 145544 10 2 keV 180 20 毫秒 IT 237Pu 12 styletextindent1em 237m2Pu colspan3 styletextindent2em 2900 250 keV 11 1 微秒 rowspan4 rowspan4 styletextalignright 94 rowspan4 styletextalignright 144 rowspan42380495599 20 rowspan4877 1 年 234U rowspan40 rowspan4 痕量由 238U 的雙 β 衰變產生 SF 19107 various CD 141014 206Hg32Si CD 61015 180Yb30Mg28Mg rowspan2fissile nuclideMost useful isotope for nuclear weapons rowspan2 styletextalignright 94 rowspan2 styletextalignright 145 rowspan22390521634 20 rowspan22411 3104 年 235U rowspan212 rowspan2 痕量由 238U 的中子捕獲產生 SF 311010 various styletextindent1em 239m1Pu colspan3 styletextindent2em 391584 3 keV 193 4 奈秒 72 styletextindent1em 239m2Pu colspan3 styletextindent2em 3100 200 keV 75 10 微秒 52 rowspan3 rowspan3 styletextalignright 94 rowspan3 styletextalignright 146 rowspan32400538135 20 rowspan36561 7 年 236U rowspan30 rowspan3 痕量由 244Pu 的衰變產生 SF 57106 various CD 131013 206Hg34Si rowspan3 rowspan3 styletextalignright 94 rowspan3 styletextalignright 147 rowspan32410568515 20 rowspan314290 6 年 9999 241Am rowspan352 rowspan3 00245 237U SF 241014 various styletextindent1em 241m1Pu colspan3 styletextindent2em 1616 1 keV 088 5 微秒 12 styletextindent1em 241m2Pu colspan3 styletextindent2em 2200 200 keV 21 3 微秒 rowspan2 rowspan2 styletextalignright 94 rowspan2 styletextalignright 148 rowspan22420587426 20 rowspan2375 2105 年 238U rowspan20 rowspan2 SF 55104 various 243Pu styletextalignright 94 styletextalignright 149 243062003 3 4956 3 小時 243Am 72 styletextindent1em 243mPu colspan3 styletextindent2em 3836 4 keV 330 30 奈秒 12 rowspan2 rowspan2 styletextalignright 94 rowspan2 styletextalignright 150 rowspan2244064204 5 rowspan2808107 年 9988 240U rowspan20 rowspan2 痕量來自太空，是否為有爭議 SF 123 various 245Pu styletextalignright 94 styletextalignright 151 245067747 15 105 1 小時 245Am 92 246Pu styletextalignright 94 styletextalignright 152 246070205 16 1084 2 日 246mAm 0 247Pu styletextalignright 94 styletextalignright 153 24707407 32 227 23 日 247Am 12 參考文獻 Isotope masses from Ame2003 Atomic Mass Evaluation by G Audi AH Wapstra C Thibault J Blachot and O Bersillon in Nuclear Physics A729 2003 Halflife spin and isomer data selected from these sources Editing notes on this articles talk page Audi Bersillon Blachot Wapstra The Nubase2003 evaluation of nuclear and decay properties Nuc Phys A 729 pp 3128 2003 National Nuclear Data Center Brookhaven National Laboratory Information extracted from the NuDat 21 database retrieved Sept 2005 David R Lide ed Norman E Holden in CRC Handbook of Chemistry and Physics 85th Edition online version CRC Press Boca Raton Florida 2005 Section 11 Table of the Isotopes Pu Category 鈽