Question

part a
write the correct formula for each species: sulfur dioxide, sulfur trioxide, the sulfate ion.
express your answers as chemical formulas separated by a comma.

Explanation:

Step1: Determine formula for sulfur dioxide

Sulfur dioxide consists of one sulfur (S) atom and two oxygen (O) atoms. So its formula is $SO_2$.

Step2: Determine formula for sulfur trioxide

Sulfur trioxide has one sulfur (S) atom and three oxygen (O) atoms. Thus, its formula is $SO_3$.

Step3: Determine formula for sulfate ion

The sulfate ion has a sulfur (S) atom, four oxygen (O) atoms, and a charge of -2. Its formula is $SO_4^{2 - }$.

Step4: Combine the formulas

Combine the three formulas separated by commas as per the requirement.

Answer:

$SO_2, SO_3, SO_4^{2 - }$