This element and nitrogen are the most common carrier solvents in semiconductor manufacturing and in gas chromatography.
Because of its zero-point energy, this element has no melting point. This element and nitrogen are the most common carrier solvents in semiconductor manufacturing and in gas chromatography. It has the highest first ionization energy. The plus-one cation of this element can be modelled by the Rydberg [RIDE-berg] equation. The liquid form of this element exhibits (*) superfluidity. This element was discovered as a yellow spectral line during a solar eclipse. In the gold foil experiment, Rutherford fired nuclei of this element, or alpha particles, at the foil. For 10 points, name this lightest noble gas, which has atomic number 2.
Because of its zero-point energy, this element has no melting point.
helium [or He]