Which of the following oxoacid of sulphur has linkage?
pyrosulphuric acid
sulphurous acid
sulphuric acid
peroxodisulphuric acid
To find an oxyacid that has peroxy linkage - If the calculated oxidation state is more than that of the maximum oxidation state, then the oxyacid contains peroxy linkage,
The calculated oxidation state of S in,
, peroxodisulphuric acid has
linkage.
Therefore, the correct option is (4).