MCQ
Oxidation number of As in ${H_2}AsO_4^ - $ is
- A$6$
- B$7$
- ✓$5$
- D$9$
✓
Answer
Correct option: C.
$5$
c
(c) Oxidation number of $As$ in ${H_2}AsO_4^ - $
(c) Oxidation number of $As$ in ${H_2}AsO_4^ - $
$2 + x - 8 = - 1$
$x - 6 = - 1$
$x = 5$
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