This element's yellow spectral lines were first observed during a solar eclipse by Pierre Janssen.
G.C. Pimental has attempted to bond this element with two fluoride atoms. This element's yellow spectral lines were first observed during a solar eclipse by Pierre Janssen. Two atoms of this element can be combined to form Beryllium, and ultimately Carbon-12. This element's most common isotope does not have a triple point where gas, liquid, and solid phases coexist in equilibrium. This element forms the basis for the triple-alpha process, and it can be created by the fusion of hydrogen. For 10 points, name this element with atomic number two, the lightest of the Noble gases.
G.C. Pimental has attempted to bond this element with two fluoride atoms.
Helium