Question

The oxidation number of sulphur in $S_8,S_2{F}_2,H_{2}S$
respectively, are

• A. 0, +1 and -2
• B. +2, +1 and -2
• C. 0, +1 and +2
• D. -2, +1 and -2

Answer 1

Answer: (A)

In $S_8$, oxidation number of $S$ is $0$, elemental state.
In $S_2{F}_2$, $F$ is in $-1$ oxidation state, hence $S$ is in $+1$ oxidation state.
In $H_{2}S,H$ is in $+1$ oxidation state, hence $S$ is in $-2$ oxidation state.