Neon compounds

Neon compounds are rare chemical species in which neon is chemically bonded to other elements. They form only under specialized conditions because neon resists chemical bonding.

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Neon: Neon is a colorless noble gas with atomic number 10 and a filled outer electron shell. Its filled shell gives neon the unusual resistance to bonding that defines this topic.
Neon hydride ion: NeH⁺ is a molecular ion consisting of a neon atom bonded to a hydrogen nucleus. It is a well-characterized neon-containing ion, though not a stable neutral compound.
NeH⁺ formation: NeH⁺ can form through reactions of neon ions with hydrogen-bearing molecules in the gas phase. This reaction route produces a prominent neon-bonded molecular ion.
Argon compounds: Argon compounds are chemical species containing argon bonded to other elements, including the fluorohydride HArF. Argon has a broader set of established compounds than neon, despite both being noble gases.
Noble gas: A noble gas is an element in Group 18, characterized by a filled outer electron shell and low chemical reactivity. Neon belongs to this family, whose members vary greatly in their ability to form compounds.
Neon–helium excimer: A neon–helium excimer is a short-lived excited molecular complex of neon and helium. It demonstrates transient bonding involving neon under excited-state conditions.
Excimer: An excimer is an excited-state molecular complex that is bound while excited but dissociates in its ground state. Excimer formation explains how neon can participate in short-lived complexes without stable ground-state molecules.
Krypton compounds: Krypton compounds are chemical species containing krypton, including krypton difluoride and several other fluorides. Krypton forms stable compounds much more readily than neon.
Electron configuration: An electron configuration describes how electrons occupy atomic orbitals in an atom or ion. Neon’s closed-shell configuration accounts for its strong resistance to ordinary chemical reactions.
Neon–argon excimer: A neon–argon excimer is a short-lived excited complex formed from neon and argon atoms. Its existence illustrates how excitation can produce temporary neon-containing molecular states.