MPSC Rajyaseva 2022 GS Paper 1 — Question 55
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V2O7⁴⁻ मध्ये V ची ऑक्सिडीकरण स्थिती ही ______ आहे. The oxidation state of V in V2O7⁴⁻ is _______
1)+5✓ Correct
2)-5
3)+4
4)+10
In V2O7⁴⁻, let the oxidation state of V be x. Therefore, 2(x) + 7(-2) = -4, which gives 2x - 14 = -4, so 2x = +10, and x = +5.
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