Oxidation Numbers in Sodium Peroxide

The video tutorial explains how to determine the oxidation numbers in sodium peroxide (NaO2), a superoxide. It starts by identifying sodium's oxidation number as +1, given its position in group 1 of the periodic table. The video then addresses the unique case of oxygen in superoxides, where it does not follow the usual -2 oxidation state. Instead, the oxidation number for each oxygen in NaO2 is -1/2, ensuring the compound's overall neutrality. The tutorial concludes with a recap of these findings.

What is the unique characteristic of sodium peroxide that differentiates it from other compounds?

• It is a non-metal.

• It is a gas.

• It is a metal.

• It is a superoxide.

What is the oxidation number of sodium in sodium peroxide?

• +2

• +1

• -1

• 0

Why is the oxidation number of oxygen in sodium peroxide not -2?

• Because it is a gas.

• Because it is a metal.

• Because it is a superoxide.

• Because it is a liquid.

What is the oxidation number of each oxygen atom in sodium peroxide?

• +1

• -1

• -1/2

• 0

How do the oxidation numbers in a neutral compound like sodium peroxide add up?

• They add up to zero.

• They add up to +2.

• They add up to +1.

• They add up to -1.

What rule is used to determine the oxidation number of oxygen in sodium peroxide?

• The rule of gases.

• The rule of metals.

• The rule of neutral compounds.

• The rule of liquids.

What is the significance of the oxidation number -1/2 for oxygen in sodium peroxide?

• It indicates a neutral compound.

• It indicates a peroxide.

• It indicates a superoxide.

• It indicates a typical oxide.