Polyatomic Ions

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 sulphate?

• SO₃^2–

• HSO₄^–

• SO₄^2–

• CH₃COO^–

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

• NH₃⁺

• NH₃

• CN⁺

• NH₄⁺

What polyatomic ion is pictured here?

• hydronium

• hydroxide

• monoxide

• oxide

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

• hydrogen carbonate

• oxonium

• hydroxide

• acetate

C₂H₃O₂^-

• acetate

• carbon hydroxide

Sulfite

• S₂O₃^-2

• O₂^-2

• SO₄^-2

• SO₃^-2

What is the name of K₃PO₄?

• Tripotassium Phosphate

• Tripotassium Phosphite

• Potassium phosphide

• Potassium phosphate

Tags

NGSS.MS-PS1-1

An -ate or -ite at the end of a compound name usually indicates that the compound contains _____________.

• fewer electrons than protons

• neutral molecules

• only two elements

• a polyatomic anion

Which naming pattern is unique to polyatomic ionic compounds?

• they can have prefixes

• they can end in -ide

• they can end in -ate

• they use Roman Numerals