Is Lithium Stable?

Lithium and the next element, beryllium are so unstable that nothing else was made in the Big Bang. You can't really get past lithium in the early universe because it is sort of like a barrier. That's why the Big Bang didn't make like uranium or plutonium because one of the stepping stones to get there was too unstable to last. And so lithium is not a metal though because it didn't stick around.