Final answer:
The sulfate ion is SO42-, sulfite ion is SO32-, and the hydrogen sulfate ion is HSO4-.
Step-by-step explanation:
The formula for the sulfate ion is SO42-. It consists of one sulfur atom covalently bonded to four oxygen atoms, and it carries an overall charge of 2-.
The formula for the sulfite ion is SO32-. This ion is similar to sulfate but has one less oxygen atom.
The formula for the hydrogen sulfate ion, also known as bisulfate, is HSO4-. It is formed by adding one hydrogen ion (H+) to the sulfate ion, and it carries a single negative charge.