Memorizing Polyatomic Ions Made Easy

What is the charge on the nitrate ion (NO3)?

• +1

• -1

• -2

• -3

Which of the following is the correct name for NO2?

• Nitride

• Nitrate

• Nitrogen

• Nitrite

What is the charge on the sulfate ion (SO4)?

• -2

• -3

• -1

• +1

Which of the following is the correct name for SO3?

• Sulfate

• Sulfur

• Sulfite

• Sulfide

What is the charge on the chlorate ion (ClO3)?

• +1

• -3

• -2

• -1

Which of the following is the correct name for ClO2?

• Chlorine

• Chloride

• Chlorite

• Chlorate

What happens to the charge of a polyatomic ion when a hydrogen ion is added?

• It decreases by one

• It doubles

• It remains the same

• It increases by one

What is the name of the ion formed when one hydrogen ion is added to carbonate (CO3)?

• Hydrocarbonate

• Bicarbonate

• Carbonite

• Carbonate

What is the formula for the dichromate ion?

• CrO4

• Cr2O7

• CrO3

• Cr2O4

Which of the following ions has a negative one charge?

• Thiosulfate

• Permanganate

• Cyanide

• Ammonium