Question

Match the Column-I(Chemical species) with Column-II(Oxidation number of sulphur).

Answer 1

In List I

A. Since "S" or sulphur atom is neutral, therefore the oxidation number of S is 0. Hence, A-3 is the correct match.

B. In $H_{2}S$, let us consider the oxidation state of S be x. The oxidation state of H is +1.

Therefore, $2\times (+1)+x=0⟹x+2=0⟹x=-2$

Hence, B-4 is the correct match.

C. In $S_2{Cl}_2$, let us consider the oxidation of S be x. The oxidation state of Cl is -1.

Therefore, $2\times \left(x\right)+2\times (-1)=0⟹2x-2=0⟹x=+1$

Hence, C-2 is the correct match.

D. In $H_2{S}_2{O}_8$. Let the oxidation state of H be +1, oxygen be -2, peroxide oxygen (two peroxide oxygen are present in this compund) be -1, S be x.

Therefore, $2\times (+1)+2\times \left(x\right)+6\times (-2)+2\times (-1)=0⟹2+2x-12-2=0⟹x=+6$

Hence, D-1 is the correct match.