The correct chemical formula for hexachlorostannate (IV) ion is SnCl6^2-.
The hexachlorostannate (IV) ion is an inorganic compound that consists of a central tin (Sn) atom surrounded by six chlorine (Cl) atoms. The charge on the ion is 2-, which indicates that there are two extra electrons present. The (IV) in the name refers to the oxidation state of the tin atom, which is +4. The chemical formula for hexachlorostannate (IV) ion is therefore SnCl6^2-.