Question

Which of the following statements regarding $H_{2}S{O}_5$ is/are incorrect?

• A. The oxidation number of sulphur is +6
• B. Two oxygen atoms are present in form of peroxide
• C. Three oxygen atoms are present in form of oxide
• D. The oxidation number of sulphur is +8

Answer 1

The correct option is D The oxidation number of sulphur is +8

In $H_{2}S{O}_5$, oxidation state of $S$ will be +6, this is evident from the structure of $H_{2}S{O}_5$:and only one oxygen atom is present in form of peroxide and two oxygen atoms are present in form of oxide.