Find out the oxidation number of suphur in the following species
`H_(2)SO_(4),S_(2)O_(4)^(2-),S_(2)O_(7)^(2-),HSO_(3)^(-) and HSO_(4)^(-)`

Explanation

To find the oxidation number of sulfur in the given species, we will use the method of assigning oxidation states based on the known oxidation states of hydrogen and oxygen. Here’s a step-by-step solution for each species:

### 1. For \( H_2SO_4 \):
- The oxidation state of hydrogen (H) is +1.
- The oxidation state of oxygen (O) is -2.
- Let the oxidation state of sulfur (S) be \( x \).
- The formula for the overall charge is:
\[
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