NO3 otherwise known as nitrate.
Nitrogen trioxide
The common name for the formula NO is nitrogen monoxide or nitric oxide.
The best name for a compound made from nitrogen and oxygen (N2O3) is nitrogen trioxide.
Its standard name is, Nitrogen(III) Oxide.
The common name for sulfur trioxide is sulfuroxide.
Nitrogen trioxide
Dinitrogen Trioxide: N2O3
The common name for the formula NO is nitrogen monoxide or nitric oxide.
The best name for a compound made from nitrogen and oxygen (N2O3) is nitrogen trioxide.
Its standard name is, Nitrogen(III) Oxide.
The stock name for dinitrogen trioxide is nitrogen dioxide, which is a brownish toxic gas with a pungent odor.
The formula for nitrogen trifluoride is NF3. Nitrogen trifluoride is usually referred to by its scientific name, though it is also sometimes called nitrogen fluoride, trifluoramine, and trifluorammonia.
The common name for sulfur trioxide is sulfuroxide.
The chemical with the formula N2O3 is called Dinitrogen trioxide.
The chemical name for sulfur trioxide is sulfuric anhydride.
There are two compounds that you may be thinking of. The stable compound known as Nitrogen Trioxide is also known as Dinitrogen Trioxide, which has the molecular formular N2O3. However, there is an intermediate compound formed in some multistep reactions with the molecular formular NO3, which you could say suits the name better. This compound is unstable, however, and cannot exist for very long without reacting.
Xenon Trioxide