What is the chemical name for each of the following binary compounds: P2O3, SO2, and NO3?

The chemical names for the given binary compounds are as follows:

• P₂O₃: This compound is called diphosphorus trioxide. In this name, ‘di-‘ indicates that there are two phosphorus atoms, and ‘trioxide’ indicates three oxygen atoms.
• SO₂: This compound is known as sulfur dioxide. The prefix ‘di-‘ signifies that there are two oxygen atoms bonded to the sulfur atom.
• NO₃: While this is technically a polyatomic ion (nitrate), if we’re sticking to the format of binary compounds, there is a common understanding here. However, for clarification, this formula actually represents the nitrate ion, which consists of one nitrogen atom and three oxygen atoms. Its full name is nitrogen trioxide in a binary sense although NO₃ typically stands alone in discussion of ionic compounds.

These names help to convey the composition of each compound, providing insight into their structure and the elements involved.