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It's Elemental - The Element Technetium
<!doctype html> <html lang="en-US"> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta name="keywords" content="Technetium,elements,the element Technetium,element Technetium,elemental Technetium,uses of Technetium,history of Technetium,information about Technetium,table of elements,periodic table of elements,periodical table of elements"> <meta name="description" content="The Element Technetium - Known Isotopes"> <meta name="robots" content="index,all"> <link rel="stylesheet" href="/css/main_2020.css"> <link rel="stylesheet" href="/css/font-awesome.min.css"> <!-- icon library for hamburger menu and magnifying glass --> <link rel="stylesheet" href="/css/itselemental_2020.css"> <script async src="https://www.googletagmanager.com/gtag/js?id=G-3SJLGKR77H"></script><script>window.dataLayer = window.dataLayer || []; function gtag(){dataLayer.push(arguments);} gtag('js', new Date()); gtag('config', 'G-3SJLGKR77H');</script> <!-- load html5shiv if using an old IE --> <!-- this should be loaded after stylesheets --> <!--[if lt IE 9]> <script src="/js/html5shiv.js"></script> <![endif]--> <title>It's Elemental - The Element Technetium</title> </head> <body> <!-- top navigation start --> <div class="topnav" id="myTopnav"> <a href="/index.html" title="JLab Science Education Home"><img src="/g/scied_logo_sm.png" width="149" height="80" alt="Science Education Home"></a> <a href="/index.html" title="JLab Science Education Home">Home</a> <a href="/indexpages/teachers.html" title="Teacher Tools">Teachers</a> <a href="/indexpages/" title="Student Zone">Students</a> <a href="/indexpages/elementgames.html" title="Games and Puzzles">Games</a> <a href="/indexpages/science_videos.html" title="Science Videos">Videos</a> <a href="/solquiz/" title="Virginia Standards of Learning Practice Tests">VA SOL</a> <a href="/indexpages/program.html" title="Programs and Events">Programs</a> <div class="search-container"> <form action="/search/"> <input type="text" placeholder="Search..." name="q"> <button type="submit"><i class="fa fa-search"></i></button> </form> </div> <a href="javascript:void(0);" class="icon" title="Menu" onclick="navToggle();"> <i class="fa fa-bars"></i> </a> </div> <!-- top navigation end --> <!-- 'main' section start --> <main> <div class="content"> <h1 class="page-header">It's Elemental</h1> <!-- begin element navigation --> <!-- desktop size --> <div class="row element-nav regular"> <p class="left"> <a href="iso042.html"><img src="larr.gif" alt="Molybdenum"></a> </p> <p class="left"> <a href="iso042.html">Previous Element<br><span class="nav-name">(Molybdenum)</span></a> </p> <p> <a href="/itselemental/">The Periodic Table of Elements</a> </p> <p class="right"> <a href="iso044.html"><img src="rarr.gif" alt="Ruthenium"></a> </p> <p class="right"> <a href="iso044.html">Next Element<br><span class="nav-name">(Ruthenium)</span></a> </p> </div> <!-- phone size --> <div class="element-nav smallest"> <a href="index.html">The Table of Elements</a> </div> <!-- ^^ end element navigation ^^ --> <!-- begin inter-element navigation --> <!-- desktop size --> <div class="regular"> <h2 class="subtitle">Isotopes of the Element Technetium</h2> <p class="other-data">[<a href="ele043.html">Click for Main Data</a>]</p> </div> <!-- phone size --> <div class="smallest"> <h2 class="subtitle">Technetium</h2> <div class="extra-navigation">| <a href="iso042.html">Previous</a> | <a href="ele043.html">Main Data</a> | <a href="iso044.html">Next</a> |</div> </div> <!-- ^^ end inter-element navigation ^^ --> <p>Most of the isotope data on this site has been obtained from the <a href="http://www.nndc.bnl.gov/" class="external">National Nuclear Data Center</a>. Please <a href="http://www.nndc.bnl.gov/" class="external">visit their site</a> for more information.</p> <p class="tbltitle">Known Isotopes</p> <div class="isotope-table"><table class="isotope"><tr><td class="hd">Mass Number</td><td class="hd">Half-life</td><td class="hd">Decay Mode</td><td class="hd">Branching Percentage</td></tr><tr><td class="new">85</td><td class="new nowrap">0.5 seconds</td><td class="new"><a href="/glossary/proton_emission.html">Proton Emission</a> (suspected)</td><td class="new">No Data Available</td></tr><tr><td class="new">86</td><td class="new nowrap">54 milliseconds</td><td class="new"><a href="/glossary/electroncapture.html">Electron Capture</a></td><td class="new">100.00%</td></tr><tr><td></td><td></td><td><a href="/glossary/electroncapture.html">Electron Capture</a> with<br>delayed <a href="/glossary/proton_emission.html">Proton Emission</a></td><td>No Data Available</td></tr><tr><td class="new">87</td><td class="new nowrap">2.2 seconds</td><td class="new"><a href="/glossary/electroncapture.html">Electron Capture</a></td><td class="new">100.00%</td></tr><tr><td class="new">88</td><td class="new nowrap">5.8 seconds</td><td class="new"><a href="/glossary/electroncapture.html">Electron Capture</a></td><td class="new">100.00%</td></tr><tr><td class="new">88<sub>m</sub></td><td class="new nowrap">6.4 seconds</td><td class="new"><a href="/glossary/electroncapture.html">Electron Capture</a></td><td class="new">100.00%</td></tr><tr><td class="new">89</td><td class="new nowrap">12.8 seconds</td><td class="new"><a href="/glossary/electroncapture.html">Electron Capture</a></td><td class="new">100.00%</td></tr><tr><td class="new">89<sub>m</sub></td><td class="new nowrap">12.9 seconds</td><td class="new"><a href="/glossary/electroncapture.html">Electron Capture</a></td><td class="new">100.00%</td></tr><tr><td></td><td></td><td>Isomeric Transition</td><td>< 0.01%</td></tr><tr><td class="new">90</td><td class="new nowrap">8.7 seconds</td><td class="new"><a href="/glossary/electroncapture.html">Electron Capture</a></td><td class="new">100.00%</td></tr><tr><td class="new">90<sub>m</sub></td><td class="new nowrap">49.2 seconds</td><td class="new"><a href="/glossary/electroncapture.html">Electron Capture</a></td><td class="new">100.00%</td></tr><tr><td class="new">91</td><td class="new nowrap">3.14 minutes</td><td class="new"><a href="/glossary/electroncapture.html">Electron Capture</a></td><td class="new">100.00%</td></tr><tr><td class="new">91<sub>m</sub></td><td class="new nowrap">3.3 minutes</td><td class="new">Isomeric Transition</td><td class="new">< 1.00%</td></tr><tr><td></td><td></td><td><a href="/glossary/electroncapture.html">Electron Capture</a></td><td>100.00%</td></tr><tr><td class="new">92</td><td class="new nowrap">4.25 minutes</td><td class="new"><a href="/glossary/electroncapture.html">Electron Capture</a></td><td class="new">100.00%</td></tr><tr><td class="new">93</td><td class="new nowrap">2.75 hours</td><td class="new"><a href="/glossary/electroncapture.html">Electron Capture</a></td><td class="new">100.00%</td></tr><tr><td class="new">93<sub>m</sub></td><td class="new nowrap">43.5 minutes</td><td class="new">Isomeric Transition</td><td class="new">77.40%</td></tr><tr><td></td><td></td><td><a href="/glossary/electroncapture.html">Electron Capture</a></td><td>22.60%</td></tr><tr><td class="new">94</td><td class="new nowrap">293 minutes</td><td class="new"><a href="/glossary/electroncapture.html">Electron Capture</a></td><td class="new">100.00%</td></tr><tr><td class="new">94<sub>m</sub></td><td class="new nowrap">52.0 minutes</td><td class="new"><a href="/glossary/electroncapture.html">Electron Capture</a></td><td class="new">100.00%</td></tr><tr><td></td><td></td><td>Isomeric Transition</td><td>< 0.10%</td></tr><tr><td class="new">95</td><td class="new nowrap">20.0 hours</td><td class="new"><a href="/glossary/electroncapture.html">Electron Capture</a></td><td class="new">100.00%</td></tr><tr><td class="new">95<sub>m</sub></td><td class="new nowrap">61 days</td><td class="new"><a href="/glossary/electroncapture.html">Electron Capture</a></td><td class="new">96.12%</td></tr><tr><td></td><td></td><td>Isomeric Transition</td><td>3.88%</td></tr><tr><td class="new">96</td><td class="new nowrap">4.28 days</td><td class="new"><a href="/glossary/electroncapture.html">Electron Capture</a></td><td class="new">100.00%</td></tr><tr><td class="new">96<sub>m</sub></td><td class="new nowrap">51.5 minutes</td><td class="new">Isomeric Transition</td><td class="new">98.00%</td></tr><tr><td></td><td></td><td><a href="/glossary/electroncapture.html">Electron Capture</a></td><td>2.00%</td></tr><tr><td class="new">97</td><td class="new nowrap">4.21×10<sup class="isosup">+6</sup> years</td><td class="new"><a href="/glossary/electroncapture.html">Electron Capture</a></td><td class="new">100.00%</td></tr><tr><td class="new">97<sub>m</sub></td><td class="new nowrap">91.0 days</td><td class="new">Isomeric Transition</td><td class="new">96.06%</td></tr><tr><td></td><td></td><td><a href="/glossary/electroncapture.html">Electron Capture</a></td><td>3.94%</td></tr><tr><td class="new">98</td><td class="new nowrap">4.2×10<sup class="isosup">+6</sup> years</td><td class="new"><a href="/glossary/betadecay.html">Beta-minus Decay</a></td><td class="new">100.00%</td></tr><tr><td class="new">99</td><td class="new nowrap">2.111×10<sup class="isosup">+5</sup> years</td><td class="new"><a href="/glossary/betadecay.html">Beta-minus Decay</a></td><td class="new">100.00%</td></tr><tr><td class="new">99<sub>m</sub></td><td class="new nowrap">6.0067 hours</td><td class="new">Isomeric Transition</td><td class="new">100.00%</td></tr><tr><td></td><td></td><td><a href="/glossary/betadecay.html">Beta-minus Decay</a></td><td>3.7×10<sup class="isosup">-3 </sup>%</td></tr><tr><td class="new">100</td><td class="new nowrap">15.46 seconds</td><td class="new"><a href="/glossary/electroncapture.html">Electron Capture</a></td><td class="new">2.6×10<sup class="isosup">-3 </sup>%</td></tr><tr><td></td><td></td><td><a href="/glossary/betadecay.html">Beta-minus Decay</a></td><td>100.00%</td></tr><tr><td class="new">101</td><td class="new nowrap">14.02 minutes</td><td class="new"><a href="/glossary/betadecay.html">Beta-minus Decay</a></td><td class="new">100.00%</td></tr><tr><td class="new">102</td><td class="new nowrap">5.28 seconds</td><td class="new"><a href="/glossary/betadecay.html">Beta-minus Decay</a></td><td class="new">100.00%</td></tr><tr><td class="new">102<sub>m</sub></td><td class="new nowrap">4.35 minutes</td><td class="new"><a href="/glossary/betadecay.html">Beta-minus Decay</a></td><td class="new">98.00%</td></tr><tr><td></td><td></td><td>Isomeric Transition</td><td>2.00%</td></tr><tr><td class="new">103</td><td class="new nowrap">54.2 seconds</td><td class="new"><a href="/glossary/betadecay.html">Beta-minus Decay</a></td><td class="new">100.00%</td></tr><tr><td class="new">104</td><td class="new nowrap">18.3 minutes</td><td class="new"><a href="/glossary/betadecay.html">Beta-minus Decay</a></td><td class="new">100.00%</td></tr><tr><td class="new">105</td><td class="new nowrap">7.6 minutes</td><td class="new"><a href="/glossary/betadecay.html">Beta-minus Decay</a></td><td class="new">100.00%</td></tr><tr><td class="new">106</td><td class="new nowrap">35.6 seconds</td><td class="new"><a href="/glossary/betadecay.html">Beta-minus Decay</a></td><td class="new">100.00%</td></tr><tr><td class="new">107</td><td class="new nowrap">21.2 seconds</td><td class="new"><a href="/glossary/betadecay.html">Beta-minus Decay</a></td><td class="new">100.00%</td></tr><tr><td class="new">108</td><td class="new nowrap">5.17 seconds</td><td class="new"><a href="/glossary/betadecay.html">Beta-minus Decay</a></td><td class="new">100.00%</td></tr><tr><td class="new">109</td><td class="new nowrap">0.86 seconds</td><td class="new"><a href="/glossary/betadecay.html">Beta-minus Decay</a></td><td class="new">100.00%</td></tr><tr><td></td><td></td><td><a href="/glossary/betadecay.html">Beta-minus Decay</a> with<br>delayed <a href="/glossary/neutron_emission.html">Neutron Emission</a></td><td>0.08%</td></tr><tr><td class="new">110</td><td class="new nowrap">0.92 seconds</td><td class="new"><a href="/glossary/betadecay.html">Beta-minus Decay</a></td><td class="new">100.00%</td></tr><tr><td></td><td></td><td><a href="/glossary/betadecay.html">Beta-minus Decay</a> with<br>delayed <a href="/glossary/neutron_emission.html">Neutron Emission</a></td><td>0.04%</td></tr><tr><td class="new">111</td><td class="new nowrap">350 milliseconds</td><td class="new"><a href="/glossary/betadecay.html">Beta-minus Decay</a></td><td class="new">100.00%</td></tr><tr><td></td><td></td><td><a href="/glossary/betadecay.html">Beta-minus Decay</a> with<br>delayed <a href="/glossary/neutron_emission.html">Neutron Emission</a></td><td>0.85%</td></tr><tr><td class="new">112</td><td class="new nowrap">0.29 seconds</td><td class="new"><a href="/glossary/betadecay.html">Beta-minus Decay</a></td><td class="new">100.00%</td></tr><tr><td></td><td></td><td><a href="/glossary/betadecay.html">Beta-minus Decay</a> with<br>delayed <a href="/glossary/neutron_emission.html">Neutron Emission</a></td><td>4.00%</td></tr><tr><td class="new">113</td><td class="new nowrap">160 milliseconds</td><td class="new"><a href="/glossary/betadecay.html">Beta-minus Decay</a></td><td class="new">No Data Available</td></tr><tr><td></td><td></td><td><a href="/glossary/betadecay.html">Beta-minus Decay</a> with<br>delayed <a href="/glossary/neutron_emission.html">Neutron Emission</a></td><td>2.10%</td></tr><tr><td class="new">114</td><td class="new nowrap">100 milliseconds</td><td class="new"><a href="/glossary/betadecay.html">Beta-minus Decay</a></td><td class="new">100.00%</td></tr><tr><td></td><td></td><td><a href="/glossary/betadecay.html">Beta-minus Decay</a> with<br>delayed <a href="/glossary/neutron_emission.html">Neutron Emission</a> (suspected)</td><td>No Data Available</td></tr><tr><td class="new">114<sub>m</sub></td><td class="new nowrap">90 milliseconds</td><td class="new"><a href="/glossary/betadecay.html">Beta-minus Decay</a></td><td class="new">100.00%</td></tr><tr><td></td><td></td><td><a href="/glossary/betadecay.html">Beta-minus Decay</a> with<br>delayed <a href="/glossary/neutron_emission.html">Neutron Emission</a> (suspected)</td><td>No Data Available</td></tr><tr><td class="new">115</td><td class="new nowrap">83 milliseconds</td><td class="new"><a href="/glossary/betadecay.html">Beta-minus Decay</a></td><td class="new">No Data Available</td></tr><tr><td></td><td></td><td><a href="/glossary/betadecay.html">Beta-minus Decay</a> with<br>delayed <a href="/glossary/neutron_emission.html">Neutron Emission</a></td><td>No Data Available</td></tr><tr><td class="new">116</td><td class="new nowrap">56 milliseconds</td><td class="new"><a href="/glossary/betadecay.html">Beta-minus Decay</a></td><td class="new">No Data Available</td></tr><tr><td class="new">117</td><td class="new nowrap">85 milliseconds</td><td class="new"><a href="/glossary/betadecay.html">Beta-minus Decay</a></td><td class="new">No Data Available</td></tr><tr><td class="new">118</td><td class="new nowrap">No Data Available</td><td class="new"><a href="/glossary/betadecay.html">Beta-minus Decay</a></td><td class="new">No Data Available</td></tr><tr><td class="new">119</td><td class="new nowrap">> 392 nanoseconds</td><td class="new"><a href="/glossary/betadecay.html">Beta-minus Decay</a> with delayed<br>Double <a href="/glossary/neutron_emission.html">Neutron Emission</a> (suspected)</td><td class="new">No Data Available</td></tr><tr><td></td><td></td><td><a href="/glossary/betadecay.html">Beta-minus Decay</a></td><td>No Data Available</td></tr><tr><td class="new">119<sub>m</sub></td><td class="new nowrap">392 nanoseconds</td><td class="new"><a href="/glossary/betadecay.html">Beta-minus Decay</a> with<br>delayed <a href="/glossary/neutron_emission.html">Neutron Emission</a> (suspected)</td><td class="new">No Data Available</td></tr><tr><td class="new">120</td><td class="new nowrap">> 394 nanoseconds</td><td class="new"><a href="/glossary/betadecay.html">Beta-minus Decay</a></td><td class="new">No Data Available</td></tr><tr><td class="new">120<sub>m</sub></td><td class="new nowrap">394 nanoseconds</td><td class="new"><a href="/glossary/betadecay.html">Beta-minus Decay</a> with<br>delayed <a href="/glossary/neutron_emission.html">Neutron Emission</a> (suspected)</td><td class="new">No Data Available</td></tr><tr><td class="new">120<sub>m1</sub></td><td class="new nowrap">> 394 nanoseconds</td><td class="new"><a href="/glossary/betadecay.html">Beta-minus Decay</a> with delayed<br>Double <a href="/glossary/neutron_emission.html">Neutron Emission</a> (suspected)</td><td 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