Element or Ion

Which of the following is nitrite?

• NO^-

• NO₂^-

• NO₃^-

• NO₄^-

What is the correct name for this polyatomic ion: CN^–

• carbonate

• cyanide

• chromate

• chromite

What is the correct name for this polyatomic ion: OH^–

• hydrogen carbonate

• oxonium

• hydroxide

• acetate

What is the correct name for this polyatomic ion: NO₃^–

• carbonate

• Nitride

• nitrite

• nitrate

What is the correct name for this polyatomic ion: CrO₄^2–

• chromate

• dichromate

• carbonate

• ammonium

What is the correct name for this polyatomic ion: PO₄^3–

• phosphorus tetroxide

• phosphate

• phosphite

• hypophosphate

What is the correct formula for the polyatomic ion called chlorate?

• ClO^–

• ClO₂^–

• ClO₃^–

• ClO₄^–

What is the correct formula for the polyatomic ion called hydrogen carbonate?

• HCO₃^–

• CO₃^2–

• CrO₄^2–

• CN^–

What is the correct formula for the polyatomic ion called dichromate?

• CO₃^2–

• Cr₂O₇^2–

• CrO₄^2–

• CrO₃^–

What is the correct formula for the polyatomic ion called sulphate?

• SO₃^2–

• HSO₄^–

• SO₄^2–

• CH₃COO^–