Question:
Which of the following oxyacid of sulphur contain both S=S and S=O bonds ?
Which of the following oxyacid of sulphur contain both S=S and S=O bonds ?
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Thiosulphuric acid is unique among sulphur oxyacids due to the presence of both S=S and S=O bonds.
Updated On: Feb 2, 2026
- $\mathrm{H_2S_2O_5}$
- $\mathrm{H_2S_2O_4}$
- $\mathrm{H_2S_2O_2}$
- $\mathrm{H_2S_2O_3}$
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The Correct Option is D
Solution and Explanation
Step 1: Structure of oxyacids of sulphur.
Different oxyacids of sulphur show different bonding patterns involving sulphur–sulphur and sulphur–oxygen bonds.
Step 2: Analysis of thiosulphuric acid.
Thiosulphuric acid $\mathrm{(H_2S_2O_3)}$ contains one sulphur atom bonded to another sulphur atom through an S=S bond and also contains S=O bonds.
Step 3: Elimination of other options.
Other given oxyacids do not simultaneously contain both S=S and S=O bonds.
Step 4: Conclusion.
Therefore, the correct answer is $\mathrm{H_2S_2O_3$}.
Different oxyacids of sulphur show different bonding patterns involving sulphur–sulphur and sulphur–oxygen bonds.
Step 2: Analysis of thiosulphuric acid.
Thiosulphuric acid $\mathrm{(H_2S_2O_3)}$ contains one sulphur atom bonded to another sulphur atom through an S=S bond and also contains S=O bonds.
Step 3: Elimination of other options.
Other given oxyacids do not simultaneously contain both S=S and S=O bonds.
Step 4: Conclusion.
Therefore, the correct answer is $\mathrm{H_2S_2O_3$}.
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