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How to Write the Formula for Sulfur trioxide

Learning to name chemical compounds requires that you:

  • Determine the type of compound you are working with.
  • Apply the rules for naming that type of compound.
  • Practice until it becomes second nature.
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Get more practice writing formulas for compounds.

For Sulfur trioxide use the hints and resources below to help write the formula.

Hint for Writing the Formula for Sulfur trioxide

Two non-metals = molecular. We use prefixes!

mono di tri tetra penta hexa hepta octa non dec
1 2 3 4 5 6 7 8 9 10

Sulfur trioxide Resources