鐨的同位素 圖表 rowspan2241Fm rowspan2 styletextalignright 100 rowspan2 styletextalignright 141 rowspan224107421 32 rowspan2730 60 µs SF 78 various rowspan252 14 237Cf 242Fm styletextalignright 100 styletextalignright 142 24207343 43 4 μs various 0 rowspan3243Fm rowspan3 styletextalignright 100 rowspan3 styletextalignright 143 rowspan324307447 23 rowspan3231 9 ms 91 239Cf rowspan372 SF 9 various （不常見） 243Es rowspan2244Fm rowspan2 styletextalignright 100 rowspan2 styletextalignright 144 rowspan224407404 22 rowspan2312 8 ms SF 99 various rowspan20 1 240Cf rowspan3245Fm rowspan3 styletextalignright 100 rowspan3 styletextalignright 145 rowspan324507535 21 rowspan342 13 s 957 241Cf rowspan312 42 245Es SF 13 various rowspan4246Fm rowspan4 styletextalignright 100 rowspan4 styletextalignright 146 rowspan4246075350 17 rowspan4154 4 s 85 242Cf rowspan40 10 246Es SF 10 various SF 45 various rowspan2247Fm rowspan2 styletextalignright 100 rowspan2 styletextalignright 147 rowspan224707695 12 rowspan231 1 s 50 243Cf rowspan272 50 247Es rowspan3248Fm rowspan3 styletextalignright 100 rowspan3 styletextalignright 148 rowspan3248077186 9 rowspan3351 8 s 93 244Cf rowspan30 7 248Es SF 10 various rowspan2249Fm rowspan2 styletextalignright 100 rowspan2 styletextalignright 149 rowspan2249078928 7 rowspan216 1 min 85 249Es rowspan272 15 245Cf rowspan3250Fm rowspan3 styletextalignright 100 rowspan3 styletextalignright 150 rowspan3250079521 9 rowspan3304 15 min 90 246Cf rowspan30 10 250Es SF 69103 various styletextindent1em 250mFm colspan3 styletextindent2em 11992 10 keV 192 5 s IT 250Fm 8 rowspan2251Fm rowspan2 styletextalignright 100 rowspan2 styletextalignright 151 rowspan2251081540 16 rowspan2530 8 h 982 251Es rowspan292 18 247Cf styletextindent1em 251mFm colspan3 styletextindent2em 20009 11 keV 211 16 µs 52 rowspan2 252Fm rowspan2 styletextalignright 100 rowspan2 styletextalignright 152 rowspan2 252082467 6 rowspan2 2539 4 h 9999 248Cf rowspan2 0 SF 0023 various rowspan2253Fm rowspan2 styletextalignright 100 rowspan2 styletextalignright 153 rowspan2253085185 4 rowspan2300 12 d 88 253Es rowspan212 12 249Cf rowspan2254Fm rowspan2 styletextalignright 100 rowspan2 styletextalignright 154 rowspan22540868544 30 rowspan23240 2 h 9994 250Cf rowspan20 SF 0592 various rowspan2255Fm rowspan2 styletextalignright 100 rowspan2 styletextalignright 155 rowspan2255089964 5 rowspan22007 7 h 251Cf rowspan272 SF 24105 various rowspan2256Fm rowspan2 styletextalignright 100 rowspan2 styletextalignright 156 rowspan2256091774 8 rowspan21576 13 min SF 919 various rowspan20 81 252Cf rowspan2257FmHeaviest nuclide produced via neutron capture rowspan2 styletextalignright 100 rowspan2 styletextalignright 157 rowspan2257095106 7 rowspan21005 2 d 9979 253Cf rowspan292 SF 21 various 258Fm styletextalignright 100 styletextalignright 158 25809708 22 370 14 µs SF various 0 259Fm styletextalignright 100 styletextalignright 159 2591006 3 15 3 s SF various 32 260FmDiscovery of this isotope is unconfirmedNot directly synthesized occurs as decay product of 260Md styletextalignright 100 styletextalignright 160 26010281 55 4 ms 0 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 Fm