Oxidation numbers of P in PO₄³⁻, of S in SO₄²⁻ and that of Cr in Cr₂O₇²⁻ are respectively
Options
(a) 3,6 and 5
(b) 5,3 and 6
(c) -3, 6 and 6
(d) 5,6 and 6
Correct Answer:
5,6 and 6
Explanation:
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