The representative particle for gaseous nitrogen is the __ a gram b formula unit c atom d molecule

To determine the representative particle for gaseous nitrogen, we need to consider the nature of nitrogen in its gaseous state. 1. **Gaseous Nitrogen**: Nitrogen (N) exists as a diatomic molecule (N₂) in its gaseous form. This means that two nitrogen atoms bond together to form a single molecule of nitrogen gas. 2. **Options Analysis**: - a. **gram**: This is a unit of mass, not a representative particle. - b. **formula unit**: This term is typically used for ionic compounds, not for molecular gases like nitrogen. - c. **atom**: While nitrogen is made of atoms, in its gaseous state, it is more accurately represented as a molecule. - d. **molecule**: This is the correct term, as nitrogen gas is composed of N₂ molecules. Based on this analysis, the representative particle for gaseous nitrogen is **d. molecule**.