Polyatomic Ions and Their Charges

The video tutorial covers the basics of ionic and molecular compounds, focusing on polyatomic ions. It explains the formation and charges of these ions, providing examples like ammonium, hydronium, and hydroxide. The tutorial also highlights negatively charged polyatomic ions such as carbonate and chromate. The session concludes with acknowledgments to Professor Avalar.

What distinguishes an ionic compound from a molecular compound?

• Molecular compounds contain metals and non-metals.

• Ionic compounds contain only non-metals.

• Ionic compounds contain metals and non-metals.

• Molecular compounds contain only metals.

Which of the following is a positively charged polyatomic ion?

• Peroxide

• Chlorate

• Ammonium

• Hydroxide

Which of the following ions has a positive charge?

• Ammonium

• Nitrate

• Sulfate

• Hydroxide

What is the charge of the hydroxide ion?

• Neutral

• Positive

• Variable

• Negative

Which ion is represented by the formula ClO3?

• Perchlorate

• Hypochlorite

• Chlorate

• Chloride

What is the charge of the nitrate ion?

• Positive

• Negative

• Neutral

• Variable

What is the formula for the sulfate ion?

• S2O3

• SO4

• S2O4

• SO3

Which of the following is a polyatomic ion with a negative two charge?

• Ammonium

• Hydronium

• Sulfate

• Carbonate

Which ion is represented by the formula Cr2O7?

• Chromate

• Peroxide

• Dichromate

• Phosphate

What is the formula for the phosphate ion?

• PO3

• PO4

• P2O7

• P3O4