Sodium and Sulfur Compounds

This video tutorial explains how to determine the oxidation numbers for the compound Na2S2. It begins by identifying the compound as neutral, meaning the sum of oxidation numbers equals zero. Sodium, being in group one of the periodic table, has a +1 oxidation number. Therefore, two sodium atoms contribute a total of +2. To balance this, each sulfur atom must have an oxidation number of -1, resulting in a total of -2 for the two sulfur atoms. This ensures the overall charge of the compound remains zero. The video concludes with a recap of these calculations.

What is the overall charge of the compound Na2S2?

• Negative

• Depends on the environment

• Neutral

• Positive

Which group in the periodic table does sodium belong to?

• Group 2

• Group 16

• Group 17

• Group 1

What is the oxidation number of sodium in Na2S2?

• +2

• -1

• 0

• +1

How many sodium atoms are present in Na2S2?

• 1

• 2

• 3

• 4

What is the oxidation number of sulfur in Na2S2?

• 0

• +1

• -1

• -2