A polyatomic ion is another name for a __ ion.Multiple choice question.positiveneutralcomplexnegative

A polyatomic ion is another name for a complex ion.

Polyatomic ions consist of two or more atoms bonded together, and they carry a charge. This makes them different from monatomic ions, which consist of a single atom and can be either positive (cations) or negative (anions). Polyatomic ions can be both negatively charged (like sulfate $\text{SO}_4^{2-}$ or nitrate $\text{NO}_3^{-}$) or positively charged (like ammonium $\text{NH}_4^{+}$). Therefore, the most suitable answer among the choices provided is "complex" because it encompasses the idea that these ions are made up of multiple atoms.