Polyatomic ions are charged particles that consist of two or more atoms bonded together. Unlike simple ions, which are made of a single atom, polyatomic ions have a specific arrangement of atoms that gives them a unique charge. Common examples include the sulfate ion (SO₄²⁻) and the nitrate ion (NO₃⁻). These ions play important roles in various chemical reactions and are often found in compounds. In many cases, polyatomic ions can combine with other ions to form larger compounds. For instance, when a sodium ion (Na⁺) bonds with a nitrate ion, they create sodium nitrate (NaNO₃), a substance commonly used in fertilizers. Understanding polyatomic ions is essential for