鎢（原子量：18384 1）共有 46 個同位素，其中有 5 種在自然界出現，當中具有極長的半衰期，其他 4 種理論上具有放射性但是迄今為止尚未觀測到。 圖表 158W styletextalignright 74 styletextalignright 84 15797456 54 137 17 ms 154Hf 0 styletextindent1em 158mW colspan3 styletextindent2em 1889 8 keV 143 19 µs 8 rowspan2159W rowspan2 styletextalignright 74 rowspan2 styletextalignright 85 rowspan215897292 43 rowspan282 7 ms 82 155Hf rowspan272 rowspan2 rowspan2 18 159Ta rowspan2160W rowspan2 styletextalignright 74 rowspan2 styletextalignright 86 rowspan215996848 22 rowspan290 5 ms 87 156Hf rowspan20 rowspan2 rowspan2 14 160Ta rowspan2161W rowspan2 styletextalignright 74 rowspan2 styletextalignright 87 rowspan216096736 21 rowspan2409 16 ms 73 157Hf rowspan272 rowspan2 rowspan2 23 161Ta rowspan2162W rowspan2 styletextalignright 74 rowspan2 styletextalignright 88 rowspan2161963497 19 rowspan2136 7 s 53 162Ta rowspan20 rowspan2 rowspan2 47 158Hf rowspan2163W rowspan2 styletextalignright 74 rowspan2 styletextalignright 89 rowspan216296252 6 rowspan228 2 s 59 163Ta rowspan232 rowspan2 rowspan2 41 159Hf rowspan2164W rowspan2 styletextalignright 74 rowspan2 styletextalignright 90 rowspan2163958954 13 rowspan263 2 s 974 164Ta rowspan20 rowspan2 rowspan2 26 160Hf rowspan2165W rowspan2 styletextalignright 74 rowspan2 styletextalignright 91 rowspan2164958280 27 rowspan251 5 s 998 165Ta rowspan232 rowspan2 rowspan2 2 161Hf rowspan2166W rowspan2 styletextalignright 74 rowspan2 styletextalignright 92 rowspan2165955027 11 rowspan2192 6 s 9996 166Ta rowspan20 rowspan2 rowspan2 035 162Hf rowspan2167W rowspan2 styletextalignright 74 rowspan2 styletextalignright 93 rowspan2166954816 21 rowspan2199 5 s 999 167Ta rowspan232 rowspan2 rowspan2 1 163Hf rowspan2168W rowspan2 styletextalignright 74 rowspan2 styletextalignright 94 rowspan2167951808 17 rowspan251 2 s 9999 168Ta rowspan20 rowspan2 rowspan2 0319 164Hf 169W styletextalignright 74 styletextalignright 95 168951779 17 76 6 s 169Ta 52 rowspan2170W rowspan2 styletextalignright 74 rowspan2 styletextalignright 96 rowspan2169949228 16 rowspan2242 4 min 99 170Ta rowspan20 rowspan2 rowspan2 1 166Hf 171W styletextalignright 74 styletextalignright 97 17094945 3 238 4 min 171Ta 52 172W styletextalignright 74 styletextalignright 98 17194729 3 66 9 min 172Ta 0 173W styletextalignright 74 styletextalignright 99 17294769 3 76 2 min 173Ta 52 174W styletextalignright 74 styletextalignright 100 17394608 3 332 21 min 174Ta 0 175W styletextalignright 74 styletextalignright 101 17494672 3 352 6 min 175Ta 12 176W styletextalignright 74 styletextalignright 102 17594563 3 25 1 h 176Ta 0 177W styletextalignright 74 styletextalignright 103 17694664 3 132 2 min 177Ta 12 178W styletextalignright 74 styletextalignright 104 177945876 16 216 3 d 178Ta 0 179W styletextalignright 74 styletextalignright 105 178947070 17 3705 16 min 179Ta 72 rowspan2 styletextindent1em 179m1W rowspan2 colspan3 styletextindent2em 221926 8 keV rowspan2640 7 min IT 9972 179W rowspan212 rowspan2 rowspan2 28 179Ta styletextindent1em 179m2W colspan3 styletextindent2em 163190 8 keV 390 30 ns 212 styletextindent1em 179m3W colspan3 styletextindent2em 334845 16 keV 750 80 ns 352 180WPrimordial radionuclide styletextalignright 74 styletextalignright 106 179946704 4 18 021018 y 176Hf 0 00012 1 styletextindent1em 180m1W colspan3 styletextindent2em 152904 3 keV 547 9 ms IT 180W 8 styletextindent1em 180m2W colspan3 styletextindent2em 326456 21 keV 233 19 µs 14 181W styletextalignright 74 styletextalignright 107 180948197 5 1212 2 d 181Ta 92 182W styletextalignright 74 styletextalignright 108 1819482042 9 colspan3 aligncenter 觀測上穩定 Believed to undergo decay to 178Hf with a halflife over 1701020 y 0 02650 16 183W styletextalignright 74 styletextalignright 109 1829502230 9 colspan3 aligncenter 觀測上穩定 Believed to undergo decay to 179Hf with a halflife over 801019 y 12 01431 4 styletextindent1em 183mW colspan3 styletextindent2em 309493 3 keV 52 3 s IT 183W 112 184W styletextalignright 74 styletextalignright 110 1839509312 9 colspan3 aligncenter 觀測上穩定 Believed to undergo decay to 180Hf with a halflife over 1801020 y 0 03064 2 185W styletextalignright 74 styletextalignright 111 1849534193 10 751 3 d 185Re 32 styletextindent1em 185mW colspan3 styletextindent2em 19743 5 keV 1597 4 min IT 185W 112 186W styletextalignright 74 styletextalignright 112 1859543641 19 colspan3 aligncenter 觀測上穩定 Believed to undergo decay to 182Hf with a halflife over 411018 y 0 02843 19 styletextindent1em 186m1W colspan3 styletextindent2em 15172 6 keV 18 1 µs 7 styletextindent1em 186m2W colspan3 styletextindent2em 35428 21 keV 3 ms 16 187W styletextalignright 74 styletextalignright 113 1869571605 19 2372 6 h 187Re 32 188W styletextalignright 74 styletextalignright 114 187958489 4 6978 5 d 188Re 0 189W styletextalignright 74 styletextalignright 115 18896191 21 116 3 min 189Re 32 190W styletextalignright 74 styletextalignright 116 18996318 18 300 15 min 190Re 0 styletextindent1em 190mW colspan3 styletextindent2em 2381 5 keV 31 ms 10 191W styletextalignright 74 styletextalignright 117 19096660 21 20 s 300 ns 32 192W styletextalignright 74 styletextalignright 118 19196817 64 10 s 300 ns 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 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 W Category 鎢