This element with more than one valence electron was produced during the nucleosynthesis after the Big Bang.
The presence of this element's degenerate type leads to its namesake flash. This element with more than one valence electron was produced during the nucleosynthesis after the Big Bang. The CNO cycle is used to produce this element, which is consumed in red giants during the triple-alpha process. It was first discovered as a (*) yellow spectral line during a solar eclipse in 1868. This element has a 25% abundance in the universe, and its nucleus is equivalent to an alpha particle. Within most stars, it is created by the nuclear fusion of hydrogen atoms, which it has double the protons of. For 10 points, name this element, the lightest noble gas, with atomic symbol He.
The presence of this element's degenerate type leads to its namesake flash.
helium (prompt on "He" before read)