Which of the following have been arranged in decreasing order of oxidation number of sulphur ?

Options

A. `Na_(2)S_(4)O_(6)gtH_(2)S_(2)O_(7)gtNa_(2)S_(2)O_(3)gtS_(8)`
B. `H_(2)SO_(4)gtSO_(2)gtH_(2)SgtH_(2)S_(2)O_(8)`
C. `SO_(2)^(2+)gtSO_(4)^(2-)gtSO_(3)^(2-)gtHSO_(4)^(-)`
D. `H_(2)SO_(5)gtH_(2)SO_(3)gtSCl_(2)gtH_(2)S`

Answer

D

Explanation

`H_(2)overset(+8)(SO_(5))gtH_(2)overset(+4)(SO_(3))gtoverset(+2)(S Cl_(2))gtH_(2)overset(-2)(S)`