鈷（原子量：58933194 3）共有 40 個同位素，其中有 1 個是穩定的。 圖表 47Co styletextalignright 27 styletextalignright 20 4701149 54 72 48Co styletextalignright 27 styletextalignright 21 4800176 43 47Fe 6 rowspan249Co rowspan2 styletextalignright 27 rowspan2 styletextalignright 22 rowspan24898972 28 rowspan235 ns 999 48Fe rowspan272 rowspan2 1 49Fe rowspan250Co rowspan2 styletextalignright 27 rowspan2 styletextalignright 23 rowspan24998154 18 rowspan244 4 ms 54 49Mn rowspan26 rowspan2 46 50Fe 51Co styletextalignright 27 styletextalignright 24 5097072 16 60 ms 200 ns 51Fe 72 52Co styletextalignright 27 styletextalignright 25 5196359 7 115 23 ms 52Fe 6 rowspan2 styletextindent1em 52mCo rowspan2 colspan3 styletextindent2em 380 100 keV rowspan2104 11 ms 52Fe rowspan22 rowspan2 IT 52Co 53Co styletextalignright 27 styletextalignright 26 52954219 19 242 8 ms 53Fe 72 rowspan2 styletextindent1em 53mCo rowspan2 colspan3 styletextindent2em 3197 29 keV rowspan2247 12 ms 985 53Fe rowspan2192 rowspan2 15 52Fe 54Co styletextalignright 27 styletextalignright 27 539484596 8 19328 7 ms 54Fe 0 styletextindent1em 54mCo colspan3 styletextindent2em 1974 5 keV 148 2 min 54Fe 7 55Co styletextalignright 27 styletextalignright 28 549419990 8 1753 3 h 55Fe 72 56Co styletextalignright 27 styletextalignright 29 559398393 23 77233 27 d 56Fe 4 57Co styletextalignright 27 styletextalignright 30 569362914 8 27174 6 d 57Fe 72 58Co styletextalignright 27 styletextalignright 31 579357528 13 7086 6 d 58Fe 2 styletextindent1em 58m1Co colspan3 styletextindent2em 2495 6 keV 904 11 h IT 58Co 5 styletextindent1em 58m2Co colspan3 styletextindent2em 5315 7 keV 104 3 µs 4 styletextalignright 27 styletextalignright 32 589331950 7 colspan3 styletextaligncenter 72 10000 styletextalignright 27 styletextalignright 33 599338171 7 52713 8 y 60Ni 5 rowspan2 styletextindent1em 60mCo rowspan2 colspan3 styletextindent2em 5859 1 keV rowspan210467 6 min IT 9976 60Co rowspan22 rowspan2 24 60Ni 61Co styletextalignright 27 styletextalignright 34 609324758 10 1650 5 h 61Ni 72 62Co styletextalignright 27 styletextalignright 35 61934051 21 150 4 min 62Ni 2 rowspan2 styletextindent1em 62mCo rowspan2 colspan3 styletextindent2em 22 5 keV rowspan21391 5 min 99 62Ni rowspan25 rowspan2 IT 1 62Co 63Co styletextalignright 27 styletextalignright 36 62933612 21 269 4 s 63Ni 72 64Co styletextalignright 27 styletextalignright 37 63935810 21 030 3 s 64Ni 1 65Co styletextalignright 27 styletextalignright 38 64936478 14 120 6 s 65Ni 72 66Co styletextalignright 27 styletextalignright 39 6593976 27 018 1 s 66Ni 3 styletextindent1em 66m1Co colspan3 styletextindent2em 175 3 keV 121 1 µs 5 styletextindent1em 66m2Co colspan3 styletextindent2em 642 5 keV 100 µs 8 67Co styletextalignright 27 styletextalignright 40 6694089 34 0425 20 s 67Ni 72 68Co styletextalignright 27 styletextalignright 41 6794487 34 0199 21 s 68Ni 7 styletextindent1em 68mCo colspan3 styletextindent2em 150 150 keV 16 3 s 3 rowspan269Co rowspan2 styletextalignright 27 rowspan2 styletextalignright 42 rowspan26894632 36 rowspan2227 13 ms 999 69Ni rowspan272 rowspan2 1 68Ni rowspan270Co rowspan2 styletextalignright 27 rowspan2 styletextalignright 43 rowspan2699510 9 rowspan2119 6 ms 999 70Ni rowspan26 rowspan2 1 69Ni styletextindent1em 70mCo colspan3 styletextindent2em 200 200 keV 500 180 ms 3 rowspan271Co rowspan2 styletextalignright 27 rowspan2 styletextalignright 44 rowspan2709529 9 rowspan297 2 ms 999 71Ni rowspan272 rowspan2 1 70Ni rowspan272Co rowspan2 styletextalignright 27 rowspan2 styletextalignright 45 rowspan27195781 64 rowspan262 3 ms 999 72Ni rowspan267 rowspan2 1 71Ni 73Co styletextalignright 27 styletextalignright 46 7296024 75 41 4 ms 72 74Co styletextalignright 27 styletextalignright 47 7396538 86 50 ms 300 ns 0 75Co styletextalignright 27 styletextalignright 48 7496833 86 40 ms 300 ns 72 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 Co