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(d) HSEous sulphate using mixture udichromate; oxidation stateDuring oxidation of ferrous sulphatH.SO, and potassiumchromium changes from(g) + 6 to +20 + 6 to +1(b) + 6 to + 3(d) + 6 to + 4h effective atomic nur​

Answer»

+6to+4

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