The oxidation number of P is +3 in:
- A$\mathrm{H_3PO_3}$
- B$\mathrm{H_3PO_4}$
- C$\mathrm{HPO_3}$
- D$\mathrm{H_4P_2O_7}$
✓ Correct answer: A
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Question ID #395629 · NewNcert