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

Options

A. `Na_(2)S_(4)O_(6) gt H_2S_(2)O_(7)gt Na_(2)S_(2)O_(3) gt S_8`
B. `H_2SO_4 gt SO_(2) gt H_2S gt H_2S_2O_8`
C. `SO_(2)^(2+) gt SO_(4)^(2-) gt SO_(3)^(2-)gtHSO_(4)^(-) `
D. `H_2SO_5 gt H_2SO_3 gt SCl_2 gt H_2S`

Answer

D

Explanation

`{:("Compound","Oxidation state"),(H_2SO_5,+6),(H_2SO_3,+4),(SCl_2,+2),(H_2S,-2):}`