The number of $S=O$ and $S-OH$ bonds present in peroxodisulphuric acid $(H_2S_2O_8)$ and pyrosulphuric acid $(H_2S_2O_7)$ respectively are:
- A($2$ and $2$) and ($2$ and $2$)
- B($2$ and $4$) and ($2$ and $4$)
- C($4$ and $2$) and ($2$ and $4$)
- D($4$ and $2$) and ($4$ and $2$)
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