Neutral Molecule
Unlike the helium hydride ion, the neutral helium hydride molecule is not stable in the ground state. However, it does exist in an excited state as an excimer, and its spectrum was first observed in the mid 1980s.
Read more about this topic: Helium Hydride Ion
Famous quotes containing the words neutral and/or molecule:
“The United States must be neutral in fact as well as in name.... We must be impartial in thought as well as in action ... a nation that neither sits in judgment upon others nor is disturbed in her own counsels and which keeps herself fit and free to do what is honest and disinterested and truly serviceable for the peace of the world.”
—Woodrow Wilson (1856–1924)
“We can come up with a working definition of life, which is what we did for the Viking mission to Mars. We said we could think in terms of a large molecule made up of carbon compounds that can replicate, or make copies of itself, and metabolize food and energy. So that’s the thought: macrocolecule, metabolism, replication.”
—Cyril Ponnamperuma (b. 1923)