Question

charge of SO3 ? how ????

Answer 1

The Oxidation states in SO3(g) are: Sulfur (+6) & Oxygen (-2), because SO3(g) has no charge. However in (SO3)2 - (aq) the Oxidation states are: Sulfur (+4) & Oxygen (-2). Don't get the two confused, they may both be written without the charge, but if SO3 is (aq) it will have a charge of -2.

Answer 2

SO3 may refer to

Sulfur trioxide, a chemical compound of sulfur and oxygenSulfite, a chemical ion composed of sulfur and oxygen with a 2− chargeSO(3), the special orthogonal group in 3 dimensions; the rotations that can be given an object in 3-spaceStar Ocean: Till the End of Time, the third main game in the Star Ocean seriesA staff officer of the third class, usually a junior officerSpecial Operations 3 - Planning, of SOE(Special Operations Executive, British, World War II)SO3, a TL9000 metric defined as the number of service impact product-attributable outages per NU (normalization unit) per year