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in Chemistry by (122k points)
Red colour complex ion formed on adding `FeCl_(3)` to sodium extract when N and S both are present in organic compound is
A. `[Fe(CN)_(6)]^(4-)`
B. `[Fe(CNS)]^(2+)`
C. `[Fe(CNS)_(2)]^(+)`
D. `[Fe(CN)_(6)]^(3-)`

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