Oxidation Numbers and Electronegativity in CNO-

The video tutorial explains how to determine the oxidation numbers for each element in the CNO- ion. It begins by discussing the concept of oxidation numbers and their relation to ion charges. The tutorial then focuses on the CNO- ion, explaining that the sum of oxidation numbers equals the ion's charge. Oxygen's oxidation number is known, but carbon and nitrogen require further analysis. By considering electronegativity and typical ionic charges, the oxidation numbers for nitrogen and carbon are determined. The video concludes with a summary of the oxidation numbers for each element in CNO-.

What is the overall charge of the CNO- ion?

• -2

• 0

• -1

• +1

Which element's oxidation number is typically -2, with few exceptions?

• Hydrogen

• Carbon

• Nitrogen

• Oxygen

When rules do not directly apply, which element's electronegativity is considered to determine oxidation numbers?

• Oxygen

• Hydrogen

• Carbon

• Nitrogen

What is the ionic charge of nitrogen when it forms ions?

• +3

• -3

• -2

• -1

If nitrogen has an oxidation number of -3, what is the oxidation number of carbon in CNO-?

• +4

• +2

• +5

• +3

What is the oxidation number of oxygen in the CNO- ion?

• -2

• -1

• 0

• -3

What is the sum of the oxidation numbers in the CNO- ion?

• 0

• -2

• -1

• +1

Which element in the CNO- ion is assigned an oxidation number of +4?

• Oxygen

• Nitrogen

• Carbon

• Hydrogen

What is the oxidation number of nitrogen in the CNO- ion?

• -3

• -2

• -1

• 0

In the context of the CNO- ion, which element is the most electronegative?

• Hydrogen

• Carbon

• Oxygen

• Nitrogen