MCQ
The oxidation number of $Fe$ and $S$ in iron pyrites are
- ✓$4, -2$
- B$2, -1$
- C$3, -1.5$
- D$3, -1$
✓
Answer
Correct option: A.
$4, -2$
(a)$\mathop {Fe}\limits^ * {S_2}$ $Fe\mathop {{S_2}}\limits^{ * \,\,} $
$x - 4 = 0$ $4 + 2x = 0$
$x = + 4$ $2x = - 4$
$x = \frac{{ - 4}}{2} = - 2$
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