beryllium-8
... that because the half-life of beryllium-8 is less than 10−16 seconds, there is a bottleneck in stellar nucleosynthesis that limits the abundance of heavier chemical elements?
... that because the <a href="./Half-life" id="mwBkQ" rel="mw:WikiLink" title="Half-life">half-life</a> of <b id="mwBkU"><a href="./Beryllium-8" id="mwBkY" rel="mw:WikiLink" title="Beryllium-8">beryllium-8</a></b> is less than 10<sup id="mwBkc">−16</sup> seconds, there is a bottleneck in <a href="./Stellar_nucleosynthesis" id="mwBkg" rel="mw:WikiLink" title="Stellar nucleosynthesis">stellar nucleosynthesis</a> that limits the abundance of heavier <a href="./Chemical_element" id="mwBkk" rel="mw:WikiLink" title="Chemical element">chemical elements</a>?