The less noble elements are leached to the environment, and a gold-rich surface layer is formed.
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The energy of the excited noble gas atoms then can ionize the quench gas particles by energy transfer via collisions; known as the Penning effect.
Ramsauer–Townsend effect, physical phenomenon involving the scattering of low-energy electrons by atoms of a noble gas
Three-center four-electron bond, found in hypervalent compounds such as the noble gas compounds