Sn(SO3)2 is the molecular formula for the chemical compound tin(IV) sulfite. The compound contains one atom of tin, represented by the symbol Sn; six atoms of oxygen, shown by the symbol O; and two atoms of sulfur, indicated by the symbol S.
Another name for tin(IV) sulfite is stannic sulfite. It has a molar mass of 278.83 grams per mole. The compound is made by combining the ion tin(IV), which carries a charge of +4, with the ion sulfite, which is an atom of sulfur and three atoms of oxygen, carrying a total charge of -2. When the two ions combine, two ions of sulfite are required to balance the charge on one ion of tin(IV).