鍶（，原子量：8762 1）共有 39 個同位素，其中有 4 個同位素是的。 圖表 rowspan2 rowspan2 styletextalignright 38 rowspan2 styletextalignright 35 rowspan27296597 64 rowspan225 ms 999 73Rb rowspan212 rowspan2 rowspan2 1 72Kr 74Sr styletextalignright 38 styletextalignright 36 7395631 54 50 ms 15 µs 74Rb 0 rowspan275Sr rowspan2 styletextalignright 38 rowspan2 styletextalignright 37 rowspan27494995 24 rowspan288 3 ms 935 75Rb rowspan232 rowspan2 rowspan2 65 74Kr 76Sr styletextalignright 38 styletextalignright 38 7594177 4 789 7 s 76Rb 0 rowspan277Sr rowspan2 styletextalignright 38 rowspan2 styletextalignright 39 rowspan276937945 10 rowspan290 2 s 9975 77Rb rowspan252 rowspan2 rowspan2 25 76Kr 78Sr styletextalignright 38 styletextalignright 40 77932180 8 159 8 s 78Rb 0 79Sr styletextalignright 38 styletextalignright 41 78929708 9 225 10 min 79Rb 32 80Sr styletextalignright 38 styletextalignright 42 79924521 7 1063 15 min 80Rb 0 81Sr styletextalignright 38 styletextalignright 43 80923212 7 223 4 min 81Rb 12 82Sr styletextalignright 38 styletextalignright 44 81918402 6 2536 3 d 82Rb 0 83Sr styletextalignright 38 styletextalignright 45 82917557 11 3241 3 h 83Rb 72 styletextindent1em 83mSr colspan3 styletextindent2em 25915 9 keV 495 12 s IT 83Sr 12 84Sr styletextalignright 38 styletextalignright 46 83913425 3 colspan3 aligncenter 觀測上穩定 Believed to decay by to 84Krsup 0 00056 1 0005500058 85Sr styletextalignright 38 styletextalignright 47 84912933 3 64853 8 d 85Rb 92 rowspan2 styletextindent1em 85mSr rowspan2 colspan3 styletextindent2em 23866 6 keV rowspan26763 4 min IT 866 85Sr rowspan212 rowspan2 rowspan2 134 85Rb 86Sr styletextalignright 38 styletextalignright 48 859092607309 91 colspan3 aligncenter 0 00986 1 0097500999 styletextindent1em 86mSr colspan3 styletextindent2em 295568 21 keV 455 7 ns 8 87SrUsed in rubidiumstrontium dating styletextalignright 38 styletextalignright 49 869088774970 91 colspan3 aligncenter 92 00700 1 0069400714 rowspan2 styletextindent1em 87mSr rowspan2 colspan3 styletextindent2em 388533 3 keV rowspan22815 12 h IT 997 87Sr rowspan212 rowspan2 rowspan2 3 87Rb Fission product styletextalignright 38 styletextalignright 50 879056122571 97 colspan3 aligncenter 0 08258 1 0822908275 89Sr styletextalignright 38 styletextalignright 51 889074507 12 5057 3 d 89Y 52 styletextalignright 38 styletextalignright 52 89907738 3 2890 3 y 90Y 0 91Sr styletextalignright 38 styletextalignright 53 90910203 5 963 5 h 91Y 52 92Sr styletextalignright 38 styletextalignright 54 91911038 4 266 4 h 92Y 0 93Sr styletextalignright 38 styletextalignright 55 92914026 8 7423 24 min 93Y 52 94Sr styletextalignright 38 styletextalignright 56 93915361 8 753 2 s 94Y 0 95Sr styletextalignright 38 styletextalignright 57 94919359 8 2390 14 s 95Y 12 96Sr styletextalignright 38 styletextalignright 58 95921697 29 107 1 s 96Y 0 rowspan297Sr rowspan2 styletextalignright 38 rowspan2 styletextalignright 59 rowspan296926153 21 rowspan2429 5 ms 9995 97Y rowspan212 rowspan2 rowspan2 05 96Y styletextindent1em 97m1Sr colspan3 styletextindent2em 30813 11 keV 170 10 ns 72 styletextindent1em 97m2Sr colspan3 styletextindent2em 8308 2 keV 255 10 ns 112 rowspan298Sr rowspan2 styletextalignright 38 rowspan2 styletextalignright 60 rowspan297928453 28 rowspan20653 2 s 9975 98Y rowspan20 rowspan2 rowspan2 25 97Y rowspan299Sr rowspan2 styletextalignright 38 rowspan2 styletextalignright 61 rowspan29893324 9 rowspan20269 1 s 999 99Y rowspan232 rowspan2 rowspan2 1 98Y rowspan2100Sr rowspan2 styletextalignright 38 rowspan2 styletextalignright 62 rowspan29993535 14 rowspan2202 3 ms 9902 100Y rowspan20 rowspan2 rowspan2 98 99Y rowspan2101Sr rowspan2 styletextalignright 38 rowspan2 styletextalignright 63 rowspan210094052 13 rowspan2118 3 ms 9763 101Y rowspan252 rowspan2 rowspan2 237 100Y rowspan2102Sr rowspan2 styletextalignright 38 rowspan2 styletextalignright 64 rowspan210194302 12 rowspan269 6 ms 945 102Y rowspan20 rowspan2 rowspan2 55 101Y 103Sr styletextalignright 38 styletextalignright 65 10294895 54 50 ms 300 ns 103Y 104Sr styletextalignright 38 styletextalignright 66 10395233 75 30 ms 300 ns 104Y 0 105Sr styletextalignright 38 styletextalignright 67 10495858 75 20 ms 300 ns 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 Isotopic compositions and standard atomic masses from Atomic weights of the elements Review 2000 IUPAC Technical Report Pure Appl Chem Vol 75 No 6 pp 683800 2003 and Atomic Weights Revised 2005 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 Sr Category 鍶