underset("Salt of iron")((X)) overset(Na_(2)S_(2)O_(3))rarr underset("Violet complex")((Y)) rarr underset("Green solution")((Z)) Write oxidation number of Fe in (X) as first digit, (Y) as second digit, (Z) as third digit in OMR.

underset("Salt of iron")((X)) overset(Na_(2)S_(2)O_(3))rarr underset("

1.	underset("Salt of iron")((X)) overset(Na_(2)S_(2)O_(3))rarr underset("Violet complex")((Y)) rarr underset("Green solution")((Z)) Write oxidation number of Fe in (X) as first digit, (Y) as second digit, (Z) as third digit in OMR.
Answer» Solution :`Fe^(3+)+S_(2)O_(3)^(-) RARR [Fe(S_(2)O_(3))_(2)]^(Theta)` (Violet coloured complex) `[Fe(S_(2)O_(3))_(2)]^(-)+Fe^(3+) overset("Boil")rarr 2Fe^(2+)+S_(4)O_(6)^(2-)` `ulbar(2Fe^(3+)+S_(2)O_(3)^(2-)rarr 2Fe^(2+)("green")+S_(4)O_(6)^(2-))` `X rarr 3, Y rarr 3, Z rarr 2`