Polyatomic Anions Overview

Which of these are polyatomic anions that contain S? (Select all that apply)

What is the chemical formula for the sulfate ion?

What are the two polyatomic anions which contain only N and O?

What is the chemical formula for the nitrate ion?

Which of these are polyatomic anions that contain P? (Select all that apply)

What is the chemical formula for the phosphate ion?

What are the four polyatomic anions which contain C?

What is the chemical formula for the carbonate ion?

Which of these are polyatomic anions that contain Cr? (Select all that apply)

What is the chemical formula for the chromate ion?

Which of the following are considered important polyatomic anions? (Select all that apply)

What is the chemical formula for the hydroxide ion?

Which of these are Group VIIA monoatomic anions? (Select all that apply)

What is the chemical formula for the fluoride ion?

Which of the following are Group VIA monoatomic ions? (Select all that apply)

What is the chemical formula for the oxide ion?

Polyatomic Anions Containing Sulfur

Four notable polyatomic anions include the sulfate ion, sulfite ion, hydrogen sulfate ion, and thiosulfate ion.
Chemical formulas:
- Sulfate Ion = SO4^2-
- Sulfite Ion = SO3^2-
- Hydrogen Sulfate Ion = HSO4^(-)
- Thiosulfate = S2O3^2-

Polyatomic Anions Containing Nitrogen and Oxygen

Two key polyatomic anions are the nitrate ion and nitrite ion.
Chemical formulas:
- Nitrate Ion = NO3^(-)
- Nitrite Ion = NO2^(-)

Polyatomic Anions Containing Phosphorus

Four significant polyatomic anions include phosphate ion, hydrogen phosphate ion, hydrogen phosphite ion, and dihydrogen phosphate ion.
Chemical formulas:
- Phosphate Ion = PO4^3-
- Hydrogen Phosphate Ion = HPO4^2-
- Hydrogen Phosphite Ion = HPO3^2-
- Dihydrogen Phosphate Ion = H2PO4^(-)

Polyatomic Anions Containing Carbon

Notable polyatomic anions consist of carbonate ion, hydrogen carbonate ion, acetate ion, and cyanide ion.
Chemical formulas:
- Carbonate Ion = CO3^2-
- Hydrogen Carbonate Ion = HCO3^(-)
- Acetate Ion = C2H3O2^(-)
- Cyanide Ion = CN^(-)

Polyatomic Anions Containing Chromium

Two important polyatomic anions are the chromate ion and dichromate ion.
Chemical formulas:
- Chromate Ion = CrO4^2-
- Dichromate Ion = Cr2O7^2-

Additional Important Polyatomic Anions

Four other significant polyatomic anions include hydroxide ion, peroxide ion, borate ion, and permanganate ion.
Chemical formulas:
- Hydroxide Ion = OH^(-)
- Peroxide Ion = O2^(2-)
- Permanganate Ion = MnO4^(-)
- Borate Ion = BO3^(3-)

Group VIIA Monoatomic Anions

Four group VIIA monoatomic anions are fluoride ion, bromide ion, chloride ion, and iodide ion.
Chemical formulas:
- Fluoride Ion = F^(-)
- Bromide Ion = Br^(-)
- Chloride Ion = Cl^(-)
- Iodide Ion = I^(-)

Group VIA Monoatomic Ions

Two group VIA monoatomic ions include oxide ion and sulfide ion.
Chemical formulas:
- Oxide Ion = O^(2-)
- Sulfide Ion = S^(2-)

This quiz covers essential polyatomic anions, focusing on those that contain sulfur, nitrogen, phosphorus, and carbon. It includes their chemical formulas and classifications. Test your understanding of these important ions in chemistry.