銠（原子量：10290549 2）共有 58 個同位素，其中有 1 個同位素是穩定的。天然存在的銠元素中，只由一種同位素構成，即唯一穩定的銠同位素 John W Arblaster The Discoverers of the Rhodium Isotopes The thirtyeight known rhodium isotopes found between 1934 and 2010 Platinum Metals Review Volume 55 Issue 2 April 2011 Pages 124134。除了穩定的銠 103 之外，最穩定的同位素為，半衰期約為 3 年又 3 個多月，再來是，半衰期約 207 天，還有，半衰期 16 天兩小時，以及半衰期一天又十一小時和，半衰期 20 小時 48 分鐘，其餘同位素半衰期皆在一小時以下，穩定性最差的是，半衰期只有 391 奈秒。也有一些較穩定的核同質異能素，例如，激發能量約為十四萬零一千電子伏特，擁有半衰期約 37 年，以及，激發能量約為十五萬零七千電子伏特，擁有半衰期約 434 天。 銠的同位素中，在之前，主要的衰變模式為正電子發射，而在之後則主要為 β 衰變。 銠 100 銠 100 是銠的一種放射性同位素，是目前已知銠的同位素中擁有最多種核異構體（或核同質異能素）的同位素，也是銠的放射性同位素中，第五穩定的同位素，質量欠缺是負值，約為 855868 MeVrhodium100 nndcbnlgov 2015916，半衰期為 208 小時，會經由發射一顆正電子衰變為。 銠 100 有除了激發能量為 0 的之外還有三種不同的核同質異能素：、、，但是最穩定的仍是基態的。激發能量為 1076 keV，質量欠缺略高於，為 854792 MeV，但半衰期不到的 05，只有 46 分鐘，有 983 的會回到基態，另外的 17 會和基態一樣經過衰變為。 另外兩個核同質異能素則十分不穩定，（激發能量：7478 keV）半衰期只有 214 奈秒，而（激發能量：112 keV）半衰期則更短，僅有 130 奈秒。 銠 103 銠 103 是銠的同位素中唯一穩定且唯一天然存在的同位素，在地殼中的豐度約只有 2 1010Barbalace Kenneth Table of Elements Environmental Chemistrycom retrieved 20070414，可由釕或鈀衰變而得，也可以經由重元素裂變而產生，因此銠 103 是一種裂變產物。有一種核同質異能素，，激發能量為 39756 keV，但其比不穩定很多，半衰期只有 56 分鐘，會經由 IT 衰變回穩定的。 是的裂變產物之一，因此，裂變產物中都會含有一些微量的鉑系金屬包括銠，因此可能可以從二手核燃料中提煉出銠 103 或其他的同位素。然而，提取過程十分複雜且昂貴，已經沒有用此種方法大規模的提煉或其他的同位素的嘗試。 圖表 89Rh styletextalignright 45 styletextalignright 44 8894884 48 10 ms 15 µs 89Ru 72 90Rh styletextalignright 45 styletextalignright 45 8994287 54 15 7 ms 12 94 ms 90Ru 0 styletextindent1em 90mRh colspan3 styletextindent2em 0 500 keV 11 3 s 10 32 s 9 91Rh styletextalignright 45 styletextalignright 46 9093655 43 174 14 s 91Ru 72 styletextindent1em 91mRh colspan3 styletextindent2em 146 11 s 12 92Rh styletextalignright 45 styletextalignright 47 9193198 43 43 13 s 92Ru 6 styletextindent1em 92mRh colspan3 styletextindent2em 466 25 s 29 158 s 6 93Rh styletextalignright 45 styletextalignright 48 9292574 43 119 7 s 93Ru 92 rowspan294Rh rowspan2 styletextalignright 45 rowspan2 styletextalignright 49 rowspan29392170 48 rowspan2706 6 s 982 94Ru rowspan224 rowspan2 179 93Tc styletextindent1em 94mRh colspan3 styletextindent2em 300 200 keV 258 2 s 94Ru 8 95Rh styletextalignright 45 styletextalignright 50 9491590 16 502 10 min 95Ru 92 rowspan2 styletextindent1em 95mRh rowspan2 colspan3 styletextindent2em 5433 3 keV rowspan2196 4 min IT 88 95Rh rowspan212 rowspan2 12 95Ru 96Rh styletextalignright 45 styletextalignright 51 95914461 14 990 10 min 96Ru 6 rowspan2 styletextindent1em 96mRh rowspan2 colspan3 styletextindent2em 520 1 keV rowspan2151 2 min IT 60 96Rh rowspan23 rowspan2 40 96Ru 97Rh styletextalignright 45 styletextalignright 52 9691134 4 307 6 min 97Ru 92 rowspan2 styletextindent1em 97mRh rowspan2 colspan3 styletextindent2em 25885 17 keV rowspan2462 16 min 944 97Ru rowspan212 rowspan2 IT 56 97Rh 98Rh styletextalignright 45 styletextalignright 53 97910708 13 872 12 min 98Ru 2 rowspan2 styletextindent1em 98mRh rowspan2 colspan3 styletextindent2em 60 50 keV rowspan236 2 min IT 98Rh rowspan25 rowspan2 98Ru 99Rh styletextalignright 45 styletextalignright 54 98908132 8 161 2 d 99Ru 12 rowspan2 styletextindent1em 99mRh rowspan2 colspan3 styletextindent2em 643 4 keV rowspan247 1 h 9983 99Ru rowspan292 rowspan2 IT 16 99Rh 100Rh styletextalignright 45 styletextalignright 55 99908122 20 208 1 h 100Ru 1 rowspan2 styletextindent1em 100m1Rh rowspan2 colspan3 styletextindent2em 1076 2 keV rowspan246 2 min IT 983 100Rh rowspan25 rowspan2 17 100Ru styletextindent1em 100m2Rh colspan3 styletextindent2em 7478 2 keV 2140 20 ns 2 styletextindent1em 100m3Rh colspan3 styletextindent2em 1120X keV 130 10 ns 7 101Rh styletextalignright 45 styletextalignright 56 100906164 18 33 3 y 101Ru 12 rowspan2 styletextindent1em 101mRh rowspan2 colspan3 styletextindent2em 15732 4 keV rowspan2434 1 d 936 101Ru rowspan292 rowspan2 IT 64 Rh rowspan2102Rh rowspan2 styletextalignright 45 rowspan2 styletextalignright 57 rowspan2101906843 5 rowspan22070 15 d 80 102Ru rowspan212 rowspan2 20 102Pd rowspan2 styletextindent1em 102mRh rowspan2 colspan3 styletextindent2em 14075 8 keV rowspan23742 10 y 9977 102Ru rowspan26 rowspan2 IT 23 102Rh 核裂變產物 styletextalignright 45 styletextalignright 58 102905504 3 colspan3 aligncenter 12 10000 styletextindent1em 103mRh colspan3 styletextindent2em 39756 6 keV 56114 9 min IT 103Rh 72 rowspan2104Rh rowspan2 styletextalignright 45 rowspan2 styletextalignright 59 rowspan2103906656 3 rowspan2423 4 s 9955 104Pd rowspan21 rowspan2 449 104Ru styletextindent1em 104mRh colspan3 styletextindent2em 128967 4 keV 434 3 min 5 105Rh styletextalignright 45 styletextalignright 60 104905694 4 3536 6 h 105Pd 72 rowspan2 styletextindent1em 105mRh rowspan2 colspan3 styletextindent2em 129781 4 keV rowspan2429 3 s IT 105Rh rowspan212 rowspan2 105Pd 106Rh styletextalignright 45 styletextalignright 61 105907287 8 2980 8 s 106Pd 1 styletextindent1em 106mRh colspan3 styletextindent2em 136 12 keV 131 2 min 106Pd 6 107Rh styletextalignright 45 styletextalignright 62 106906748 13 217 4 min 107Pd 72 styletextindent1em 107mRh colspan3 styletextindent2em 26836 4 keV 10 µs 12 108Rh styletextalignright 45 styletextalignright 63 10790873 11 168 5 s 108Pd 1 styletextindent1em 108mRh colspan3 styletextindent2em 60 110 keV 60 3 min 108Pd 5 109Rh styletextalignright 45 styletextalignright 64 108908737 13 80 2 s 109Pd 72 110Rh styletextalignright 45 styletextalignright 65 10991114 5 285 15 s 110Pd 3 styletextindent1em 110mRh colspan3 styletextindent2em 60 50 keV 32 2 s 110Pd 1 111Rh styletextalignright 45 styletextalignright 66 11091159 3 11 1 s 111Pd 72 112Rh styletextalignright 45 styletextalignright 67 11191439 6 345 37 s 112Pd 1 styletextindent1em 112mRh colspan3 styletextindent2em 330 70 keV 673 15 s 112Pd 456 113Rh styletextalignright 45 styletextalignright 68 11291553 5 280 12 s 113Pd 72 rowspan2114Rh rowspan2 styletextalignright 45 rowspan2 styletextalignright 69 rowspan211391881 12 rowspan2185 5 s 999 114Pd rowspan21 rowspan2 1 113Pd styletextindent1em 114mRh colspan3 styletextindent2em 200 150 keV 185 5 s 114Pd 45 115Rh styletextalignright 45 styletextalignright 70 11492033 9 099 5 s 115Pd 72 rowspan2116Rh rowspan2 styletextalignright 45 rowspan2 styletextalignright 71 rowspan211592406 15 rowspan2068 6 s 999 116Pd rowspan21 rowspan2 1 115Pd styletextindent1em 116mRh colspan3 styletextindent2em 200 150 keV 570 50 ms 116Pd 6 117Rh styletextalignright 45 styletextalignright 72 11692598 54 044 4 s 117Pd 72 118Rh styletextalignright 45 styletextalignright 73 11793007 54 310 30 ms 118Pd 410 119Rh styletextalignright 45 styletextalignright 74 11893211 64 300 ms 300 ns 119Pd 72 120Rh styletextalignright 45 styletextalignright 75 11993641 64 200 ms 300 ns 120Pd 121Rh styletextalignright 45 styletextalignright 76 12093872 97 100 ms 300 ns 121Pd 72 122Rh styletextalignright 45 styletextalignright 77 12194321 75 50 ms 300 ns rowspan2 rowspan2 styletextalignright 45 rowspan2 styletextalignright 78 rowspan2 12294605 6 rowspan2 403 ns rhodium123 Table of Nuclides Brookhaven National Laboratory Interactive nndcbnlgov 2015914 123Pd rowspan2 72 rowspan2 122Pd rowspan3 rowspan3 styletextalignright 45 rowspan3 styletextalignright 79 rowspan3123949382 rowspan3 391 nsrhodium124 Table of Nuclides Brookhaven National Laboratory Interactive nndcbnlgov 2015914 2 rowspan3 rowspan3 rowspan2 rowspan2 styletextalignright 45 rowspan2 styletextalignright 80 rowspan2 1249527 rowspan2 393 ns rhodium125 Table of Nuclides Brookhaven National Laboratory Interactive nndcbnlgov 2015914 125Pd rowspan2 72 rowspan2 124Pd rowspan2 rowspan2 styletextalignright 45 rowspan2 styletextalignright 81 rowspan2 12596 rowspan2 rhodium126 Table of Nuclides Brookhaven National Laboratory Interactive nndcbnlgov 2015914 126Pd rowspan2 rowspan2 125Pd 參考文獻 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 Rh Category 銠