Polyatomic

A positively charged ion is

• a cation.

• an anion.

• in a good mood.

• is an optimist.

A negatively charged ion is

• a cation.

• an anion.

• in a good mood.

• is an optimist.

An example of a polyatomic ion is:

• O^2-
• Na⁺
• CO₃^2-
• Ag⁺

Which of the following is nitrate?

• NO^-

• NO₂^-

• NO₃^-

• NO₄^-

Which of the following is ammonium?

• NH₄⁺

• NO₃^-

• NO₂^-

• MnO₄^-

Which of the following is carbonate?

• Cr₂O₄^-2

• CH₃COO^-

• CO₃^-2

• CN^-

Which of the following is hydroxide?

• Cr₂O₄^-2

• Cr₂O₄^-2

• O₃^-2

• OH^-

Which of the following is phosphate?

• PO₄^-3

• O₂^-2

• OH^-

• CO₃^-2

Which of the following is sulfate?

• S₂O₃^-2

• O₂^-2

• SO₄^-2

• SO₃^-2

The name of Na₂SO₄ is

• sodium nitrate.

• sodium hydroxide.

• sodium sulfate.

• sodium phosphate.