Oxidation number of nitrogen in \( \left(\mathrm{NH}_{4}\right)_{2} \mathrm{SO}_{4} \) is
(a) \(...
Oxidation number of nitrogen in \( \left(\mathrm{NH}_{4}\right)_{2} \mathrm{SO}_{4} \) is
(a) \( -1 / 3 \)
(b) \( -1 \)
(c) \( +1 \)
(d) \( -3 \)
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