Respuesta :
I think the correct answer from the choices listed above is the last option. For one molecule of sulfur trioxide, there is one atom of sulfur and three atoms of oxygen. The prefix tri- in trioxide signifies that there are three atoms of oxygens. Hope this answers the question. Have a nice day.
Answer;
there is one atom of sulfur and three atoms of oxygen.
Explanation;
Sulfur trioxide, is a colorless to white crystalline solid which will fume in air. Often shipped with inhibitor to prevent polymerization.
It contains four atoms, three Oxygen atoms and one Sulfur atom.