Electronegativity and Oxidation States

The video tutorial explains how to determine the oxidation numbers for each element in aluminum nitride (AlN). It begins by noting that AlN is a neutral compound, meaning the oxidation numbers must sum to zero. The video discusses the role of electronegativity in determining oxidation states, highlighting that nitrogen, being more electronegative, has an oxidation state of -3. Consequently, aluminum must have an oxidation state of +3 to balance the compound. The tutorial concludes by summarizing these findings.

What is the overall charge of the compound aluminum nitride?

• Neutral

• Negative

• Positive

• Variable

Which element is more electronegative in the compound aluminum nitride?

• Both have the same electronegativity

• Aluminum

• Nitrogen

• Neither is electronegative

According to the rule discussed, what oxidation number does the more electronegative element in a binary compound typically have?

• Equal to its mass number

• Equal to its ionic charge

• Equal to its atomic number

• Equal to its group number

What is the oxidation state of nitrogen in aluminum nitride?

• 0

• -3

• +1

• +3

What is the oxidation state of aluminum in aluminum nitride?

• 0

• +1

• -3

• +3

Why must the oxidation numbers in aluminum nitride add up to zero?

• Because it is a charged compound

• Because it is a non-metal

• Because it is a neutral compound

• Because it is a metal