Final answer:
The compound that contains three oxygen atoms and two nitrogen atoms is called dinitrogen trioxide. It consists of two nitrogen atoms and three oxygen atoms.
Step-by-step explanation:
The compound that contains three oxygen atoms and two nitrogen atoms is called dinitrogen trioxide. In this compound, nitrogen is named first because it is farther to the left in the periodic table than oxygen. Oxygen is given the -ide suffix because it is the second element named in the compound.
The prefix di- is added to nitrogen to show that there are two atoms of nitrogen in each molecule of the compound. The prefix tri- is added to oxygen to show that there are three atoms of oxygen in each molecule.