The charge of nitrate is -1.
Nitrate is a polyatomic ion, meaning it is a group of atoms that act as a single unit with a net charge. It is composed of one nitrogen atom and three oxygen atoms, represented by the chemical formula NO<sub>3</sub><sup>-</sup>. The negative charge arises from the difference in electronegativity between the nitrogen and oxygen atoms.
Here are some examples of how nitrate is used in various chemical compounds:
- Sodium nitrate (NaNO<sub>3</sub>): Used as a fertilizer, food preservative, and in fireworks.
- Potassium nitrate (KNO<sub>3</sub>): Used as a fertilizer, in gunpowder, and as a food preservative.
- Calcium nitrate (Ca(NO<sub>3</sub>)<sub>2</sub>): Used as a fertilizer and in concrete.
Nitrate plays a crucial role in various biological processes, including plant growth and nitrogen fixation.
