Sulphide ions react with Na2[Fe(NO)(CN)5] to form a purple coloured compound Na4[Fe(CN)5(NOS)]. In the reaction, the oxidation state of iron: | Qualitative and Quantitative Analysis — Chem-Mantra | Chem-Mantra

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Sulphide ions react with Na2[Fe(NO)(CN)5] to form a purple coloured compound Na4[Fe(CN)5(NOS)]. In the reaction, the oxidation state of iron:

Answer: D

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