Reactive nitrogen refers to various nitrogen-containing compounds that are chemically active and can undergo transformations in the environment. These compounds are distinct from inert nitrogen gas (N₂), which makes up about 78% of the Earth's atmosphere and is not reactive under normal conditions. Reactive nitrogen includes a range of forms, such as: 1. **Ammonia (NH₃)**: A gaseous compound that can dissolve in water to form ammonium (NH₄⁺).
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