Memorizing PIs

What is the charge of a nitrate ion?

• +1

• -3

• -2

• -1

What is the name of SO4 2- ion?

• Sulfite

• Phosphate

• Sulfide

• Sulfate

Which ion has one less oxygen atom than sulfate?

• Sulfide

• Sulfite

• Phosphate

• Nitrate

Which of the following is a correct pair of ion name and its formula?

• Nitrate - NO2 -

• Sulfate - SO3 2-

• Carbonate - CO2 2-

• Perchlorate - ClO4 -

Which ion is known as hydrogen carbonate?

• CO2

• H2CO3

• CO3 2-

• HCO3 -

What is the formula for dihydrogen phosphate?

• H2PO4 -

• PO4 3-

• H3PO4

• HPO4 2-

What is the correct formula for ammonium?

• NH3

• NH4+

• NH2-

• NH4-

Which ion is called thiosulfate?

• SO4 2-

• SO3 2-

• S2O3 2-

• S2 2-