Question

Calculate the oxidation number of sulfur from Na2S4O6. a) +2 b) +3 c) +4 d) +5

Answer 1

The oxidation number of sulfur in Na2S4O6 is +4.

Step-by-step explanation:

In the compound Na2S4O6, the oxidation number of sulfur can be calculated using the given guidelines.

1. According to guideline 3, the oxidation number for H is +1.
2. Using this oxidation number and the compound's formula, guideline 4 may then be used to calculate the oxidation number for sulfur.
3. Assuming the usual oxidation number for oxygen (-2 per guideline 3), the oxidation number for sulfur is calculated as directed by guideline 4.

Therefore, the oxidation number of sulfur in Na2S4O6 is +4.