MCQ
The oxidation number of sulphur in ${H_2}S$ is
- ✓$-2$
- B$+3$
- C$+2$
- D$-3$
✓
Answer
Correct option: A.
$-2$
(a) ${H_2}S$ [ $O.N.$ of $H = + 1$ ]
$( + 1) \times 2 + x = 0$
$2 + x = 0$; $x = - 2$
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