Which ion corresponds to the chemical formula sulfate?

The sulfate ion is represented by the chemical formula SO₄²⁻. This indicates that the ion consists of one sulfur atom (S) covalently bonded to four oxygen atoms (O), with an overall charge of negative two. This is a common polyatomic ion that plays a significant role in various chemical processes, including those in biological systems and industrial applications.

In this context, it is essential to distinguish sulfate from other ions that may have similar elements but differ in composition or structure. For instance, the other options include formations with phosphorus and oxalate, which have distinct chemical identities and properties. The sulfate ion's structure and charge contribute to its unique behavior in chemical reactions, which is why it is essential to recognize its correct formula as SO₄²⁻.