Final answer:
The compounds N2O3, CO, and SO3 are named dinitrogen trioxide, carbon monoxide, and sulfur trioxide respectively, using molecular (prefix) nomenclature.
Step-by-step explanation:
To name compounds using the Stock system, you combine the name of the cation (usually a metal) with the name of the anion (usually a non-metal). If the cation can have more than one possible positive charge, you use Roman numerals to indicate the charge. However, for non-metal compounds forming molecular compounds (like N2O3, CO, SO3), prefix system is used instead of Stock system because these are not ionic compounds with a cation and an anion.
- N2O3 is dinitrogen trioxide.
- CO is carbon monoxide.
- SO3 is sulfur trioxide.
In the case of SO3, naming it as sulfur trioxide is important to differentiate it from SO2, which is sulfur dioxide. Similarly, CO is named carbon monoxide, rather than carbon oxide to distinguish it from CO2, which is carbon dioxide.