Yes, it is
Sulfur tetraoxide 2- SO4 is sulfate
You don't say that. What you do say is that the valency of sulphur in sulphur trioxide is 6.
Sulphur and Oxygen
Sulfur trioxide is not a conductor of electricity because it is a covalent compound, meaning it does not contain freely moving charged particles (ions) that are necessary for conducting electricity.
Sulphur dioxide, Sulphur trioxide...
Yes: With a sufficient supply of oxygen, sulphur dioxide will burn to form sulphur trioxide.
Xenon Trioxide
Sulfur trioxide is a chemical compound composed of one sulfur atom and three oxygen atoms, not two.
When you burn sulphur with oxygen you create sulphur dioxide or sulphur trioxide.
Sulfur (sulphur) dioxide and sulfur trioxide all are compounds, as ANY oxide is.
The name of the compound Cl2O3 is dichlorine trioxide.
sulfur and oxygen SO3