Neon is a very inert element, however, it has been reported to form a compound with fluorine. It is still questionable if true compounds of neon exist, but evidence is mounting in favor of their existence. The ions, Ne+, (NeAr)+, (NeH)+, and (HeNe+) are known from optical and mass spectrometric studies. read more
Neon compounds were long believed not to exist. Neutral neon-containing molecules were only discovered in the twenty-first century, and even today are not well known. Neon is a noble gas with a high first ionisation potential of 21.564 eV, which is only exceeded by that of helium (24.587 eV). read more