In which of the following is the oxidation number of sulphur equal to -2?
- S8
-
H2S
- SO 2
- SO 3 2-
The correct answer is: B
Explanation
Calculating the Oxidation number of all the options, B is the correct answer.
Hydrogen has oxidation state of +1 in that compound H2S equated to 0.
i.e H2S = 0
2H + S = 0
2(+1) + S = 0
+2 + S = 0
S = 0 -2
S = - 2. - Option B