鉕沒有穩定同位素。 圖表 126Pm styletextalignright 61 styletextalignright 65 12595752 54 05 s 127Pm styletextalignright 61 styletextalignright 66 12695163 64 1 s 52 rowspan2128Pm rowspan2 styletextalignright 61 rowspan2 styletextalignright 67 rowspan212794842 43 rowspan210 3 s 128Nd rowspan26 rowspan2 127Nd 129Pm styletextalignright 61 styletextalignright 68 12894316 43 3 s 200 ns 129Nd 52 rowspan2130Pm rowspan2 styletextalignright 61 rowspan2 styletextalignright 69 rowspan212994045 32 rowspan226 2 s 130Nd rowspan2564 rowspan2 （不常見） 129Pr rowspan2131Pm rowspan2 styletextalignright 61 rowspan2 styletextalignright 70 rowspan213093587 21 rowspan263 8 s 130Pr rowspan252 rowspan2 131Nd rowspan2132Pm rowspan2 styletextalignright 61 rowspan2 styletextalignright 71 rowspan213193375 21 rowspan262 6 s 132Nd rowspan23 rowspan2 5105 131Pr 133Pm styletextalignright 61 styletextalignright 72 13292978 5 15 3 s 133Nd 32 rowspan2 styletextindent1em 133mPm rowspan2 colspan3 styletextindent2em 1304 10 keV rowspan210 s 133Nd rowspan2112 rowspan2 IT 133Pm 134Pm styletextalignright 61 styletextalignright 73 13392835 6 22 1 s 134Nd 5 styletextindent1em 134mPm colspan3 styletextindent2em 0 100 keV 5 s IT 134Pm 2 135Pm styletextalignright 61 styletextalignright 74 13492488 6 49 3 s 135Nd 5232 styletextindent1em 135mPm colspan3 styletextindent2em 50 100 keV 40 3 s 135Nd 112 136Pm styletextalignright 61 styletextalignright 75 13592357 8 107 6 s 136Nd 5 styletextindent1em 136mPm colspan3 styletextindent2em 130 120 keV 47 2 s 136Nd 2 137Pm styletextalignright 61 styletextalignright 76 136920479 14 2 min 137Nd 52 styletextindent1em 137mPm colspan3 styletextindent2em 150 50 keV 24 1 min 137Nd 112 138Pm styletextalignright 61 styletextalignright 77 137919548 30 10 2 s 138Nd 1 styletextindent1em 138mPm colspan3 styletextindent2em 30 30 keV 324 5 min 138Nd 5 139Pm styletextalignright 61 styletextalignright 78 138916804 14 415 5 min 139Nd 52 rowspan2 styletextindent1em 139mPm rowspan2 colspan3 styletextindent2em 1887 3 keV rowspan2180 20 ms IT 9983 139Pm rowspan2112 rowspan2 17 139Nd 140Pm styletextalignright 61 styletextalignright 79 13991604 4 92 2 s 140Nd 1 styletextindent1em 140mPm colspan3 styletextindent2em 420 40 keV 595 5 min 140Nd 8 141Pm styletextalignright 61 styletextalignright 80 140913555 15 2090 5 min 141Nd 52 styletextindent1em 141m1Pm colspan3 styletextindent2em 62840 10 keV 630 20 ns 112 styletextindent1em 141m2Pm colspan3 styletextindent2em 25309 5 keV 2 µs 142Pm styletextalignright 61 styletextalignright 81 141912874 27 405 5 s 142Nd 1 styletextindent1em 142mPm colspan3 styletextindent2em 88317 16 keV 20 2 ms IT 142Pm 8 143Pm styletextalignright 61 styletextalignright 82 142910933 4 265 7 d 143Nd 52 144Pm styletextalignright 61 styletextalignright 83 143912591 3 363 14 d 144Nd 5 styletextindent1em 144m1Pm colspan3 styletextindent2em 84090 5 keV 780 200 ns 9 styletextindent1em 144m2Pm colspan3 styletextindent2em 85958 22 keV 27 µs 27 rowspan2145Pm rowspan2 styletextalignright 61 rowspan2 styletextalignright 84 rowspan2144912749 3 rowspan2177 4 a 145Nd rowspan252 rowspan2 α 28107 141Pr rowspan2146Pm rowspan2 styletextalignright 61 rowspan2 styletextalignright 85 rowspan2145914696 5 rowspan2553 5 a 66 146Nd rowspan23 rowspan2 34 146Sm 147Pm 裂變產物 styletextalignright 61 styletextalignright 86 1469151385 26 26234 2 a 147Sm 72 痕量裂變產物，也是 151Eu 的衰變產物 148Pm styletextalignright 61 styletextalignright 87 147917475 7 5368 2 d 148Sm 1 rowspan2 styletextindent1em 148mPm rowspan2 colspan3 styletextindent2em 1379 3 keV rowspan24129 11 d 95 148Sm rowspan256 rowspan2 IT 5 148Pm 149Pm styletextalignright 61 styletextalignright 88 148918334 4 5308 5 h 149Sm 72 styletextindent1em 149mPm colspan3 styletextindent2em 240214 7 keV 35 3 µs 112 150Pm styletextalignright 61 styletextalignright 89 149920984 22 268 2 h 150Sm 1 151Pm styletextalignright 61 styletextalignright 90 150921207 6 2840 4 h 151Sm 52 152Pm styletextalignright 61 styletextalignright 91 151923497 28 412 8 min 152Sm 1 styletextindent1em 152m1Pm colspan3 styletextindent2em 140 90 keV 752 8 min 4 styletextindent1em 152m2Pm colspan3 styletextindent2em 250 150 keV 138 2 min 8 153Pm styletextalignright 61 styletextalignright 92 152924117 12 525 2 min 153Sm 52 154Pm styletextalignright 61 styletextalignright 93 15392646 5 173 10 min 154Sm 01 styletextindent1em 154mPm colspan3 styletextindent2em 120 120 keV 268 7 min 154Sm 34 155Pm styletextalignright 61 styletextalignright 94 15492810 3 415 2 s 155Sm 52 156Pm styletextalignright 61 styletextalignright 95 15593106 4 2670 10 s 156Sm 4 157Pm styletextalignright 61 styletextalignright 96 15693304 12 1056 10 s 157Sm 52 158Pm styletextalignright 61 styletextalignright 97 15793656 14 48 5 s 158Sm 159Pm styletextalignright 61 styletextalignright 98 15893897 21 β 159Sm 52 160Pm styletextalignright 61 styletextalignright 99 15994299 32 β 160Sm rowspan2161Pm rowspan2 styletextalignright 61 rowspan2 styletextalignright 100 rowspan216094586 54 rowspan2 β 9891 161Sm rowspan252 rowspan2 β n 109 160Sm rowspan2162Pm rowspan2 styletextalignright 61 rowspan2 styletextalignright 101 rowspan216195029 75 rowspan2 β 9821 162Sm rowspan2 rowspan2 β n 179 161Sm rowspan2163Pm rowspan2 styletextalignright 61 rowspan2 styletextalignright 102 rowspan216295368 86 rowspan2 β 95 163Sm rowspan252 rowspan2 β n 179 162Sm rowspan2164Pm rowspan2 styletextalignright 61 rowspan2 styletextalignright 103 rowspan2 rowspan2 β 9382 164Sm rowspan2 rowspan2 β n 618 163Sm rowspan2165Pm rowspan2 styletextalignright 61 rowspan2 styletextalignright 104 rowspan2 rowspan2 β 8674 165Sm rowspan2 rowspan2 β n 1326 164Sm rowspan2166Pm rowspan2 styletextalignright 61 rowspan2 styletextalignright 105 rowspan2 rowspan2 β 166Sm rowspan2 rowspan2 β n 165Sm 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 Pm Category 鉕