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Xenon Trioxide
No, Sulfur trioxide is a colourless gas
The name of the molecular compound of chemical formula SO3 is sulfur trioxide. As a gas, this is a pollutant agent of acid rain. It is used as a precursor to sulfuric acid.
This compound is formally called dinitrogen trioxide. It is produced when the anhydride of nitrous acid is mixed with water.
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SO3 is the chemical formula for the compound sulfur trioxide. Sulfur trioxide gas is a major pollutant and a big contributor to acid rain. But SO3 may, with a 2- added to it as a superscript, represent the sulfite ion with a charge of -2.
Xenon Trioxide
Sulfur trioxide is a compound.
Dinitrogen Trioxide: N2O3
Its standard name is, Nitrogen(III) Oxide.
Sulfur trioxide is a byproduct of sulfuric acid. In large quantities, sulfur trioxide can be deadly. For the most part, small quantities of sulfur trioxide will not hurt you.
Phosphorous Oxide
No, Sulfur trioxide is a colourless gas
Dinitrogen trioxide is covalently bonded.
Sulfur trioxide has a trigonal planar molecule.
Carbon trioxide is not a stable chemical compound.