Question

determine the name of the covalent compounds listed below: 1. n₂o 2. so₂ 3. pcl₅ 4. n₂o₅ 5. co₂

Explanation:

For covalent compounds, prefixes are used to indicate the number of atoms of each element. 'Mono -' is usually not used for the first element when there is one atom of it.

1. In $N_2O$, there are 2 nitrogen atoms and 1 oxygen atom, so it is dinitrogen monoxide.
2. In $SO_2$, there is 1 sulfur atom and 2 oxygen atoms, so it is sulfur dioxide.
3. In $PCl_5$, there is 1 phosphorus atom and 5 chlorine atoms, so it is phosphorus pentachloride.
4. In $N_2O_5$, there are 2 nitrogen atoms and 5 oxygen atoms, so it is dinitrogen pentoxide.
5. In $CO_2$, there is 1 carbon atom and 2 oxygen atoms, so it is carbon dioxide.

Answer:

1. Dinitrogen monoxide
2. Sulfur dioxide
3. Phosphorus pentachloride
4. Dinitrogen pentoxide
5. Carbon dioxide