Q. The oxidation number of phosphorus in H₃PO₄ is:
✅ Correct Answer: (C)
+5
Explanation: Let oxidation state of P be x. Then 3(+1) + x + 4(-2) = 0, giving x = +5.
Explanation by: Jyoti
Let oxidation state of P be x. Then 3(+1) + x + 4(-2) = 0, giving x = +5.