In an earlier lesson, you learned the names and formulas for 12 of the most common polyatomic ions. Knowing these formulas will be important when you learn how to name acid solutions, so test how well you remember them by completing this activity. Determine the formula for each polyatomic ion and then click the name to check your answer.
carbonate
The formula for carbonate is CO32−.
nitrite
The formula for nitrite is NO2−.
hydroxide
The formula for hydroxide is OH−.
phosphite
The formula for phosphite is PO33−.
chlorate
The formula for chlorate is ClO3−.
sulfite
The formula for sulfite is SO32−.
nitrate
The formula for nitrate is NO3−.
ammonium
The formula for ammonium is NH4+.
carbonite
The formula for carbonite is CO22−.
phosphate
The formula for phosphate is PO43−.
chlorite
The formula for chlorite is ClO2−.
sulfate
The formula for sulfate is SO42−.
