Oxidation Numbers and Ionic Compounds

The video tutorial explains how to determine the oxidation numbers for each element in sodium bromide (NaBr). It begins by noting that NaBr is a neutral compound, meaning the oxidation numbers must sum to zero. Sodium, being in group 1, has an oxidation number of +1, while bromine, in group 17, has an oxidation number of -1. The video concludes by confirming that these oxidation numbers add up to zero, consistent with NaBr being a neutral compound.

What is the overall charge of the compound NaBr?

• Neutral

• Variable

• Negative

• Positive

What is the oxidation number of sodium in NaBr?

• +1

• -1

• 0

• +2

Which group does bromine belong to, and what is its oxidation number in NaBr?

• Group 2, +2

• Group 1, +1

• Group 16, -2

• Group 17, -1

Why do the oxidation numbers in NaBr add up to zero?

• Because NaBr is a charged compound

• Because NaBr is a neutral compound

• Because NaBr is an ionic compound

• Because NaBr is a covalent compound

What is the significance of the oxidation numbers adding up to zero in NaBr?

• It indicates a charged compound

• It confirms the compound is neutral

• It shows the compound is unstable

• It suggests the compound is reactive