Neon

found: Emsley, J. Nature's building blocks, 2011(Neon; Ne; fifth most common element in the Universe; rare in the Earth's atmosphere; harmless gas; used mainly in so-called neon signs, although only red ones are pure neon; chemically unreactive and forms no compounds; colourless, odourless gas and is one of the group of elements known as the noble gases)

found: Wikipedia, Oct. 25, 2012(Neon is a chemical element with symbol Ne and atomic number 10. It is in group 18 (noble gases) of the periodic table. Neon is a colorless, odorless monatomic gas under standard conditions, with about two-thirds the density of air; although neon is a very common element in the universe and solar system (it is fifth in cosmic abundance after hydrogen, helium, oxygen and carbon), it is very rare on Earth; neon is the first p-block noble gas. Neon is generally considered to be inert. No true neutral compounds of neon are known. However, the ions Ne⁺, (NeAr)⁺, (NeH)⁺, and (HeNe⁺) have been observed from optical and mass spectrometric studies, and there are some unverified reports of an unstable hydrate)