What is the oxidation number of iron in sodium nitroprusside, ? — Redox Reactions and Volumetric Analysis Chemistry Question

💡 Solution & Explanation

In the nitroprusside complex, NO is present as the nitrosonium ion ($NO^+$). Let x be the O.S. of Fe. The overall charge of the complex sphere is -2. Thus, $x + 5(-1) + (+1) = -2 \Rightarrow x - 4 = -2 \Rightarrow x = +2$.