Nitrosonium Ion Definition:
The NO+ ion, which is formed when NaNO2 is treated with HCl.
Nitrosonium Ion Explained:
The species nitroxyl ion and the nitrosonium cation are related to nitric oxide by reduction and oxidation of NO⋅ respectively, and each has a distinctive chemistry unique to itself . The fundamental chemistry of these three species is best rationalized in terms of MO theory. The nitroxyl anion, isoelectronic with dioxygen, has a bond order of 2. Nitric oxide is a radical, with a bond order of 2.5, the unpaired electron occupying an antibonding Pi- orbital.