A) \[N{{a}_{3}}Fe{{(CN)}_{6}}\]
B) \[N{{a}_{3}}[Fe{{(CN)}_{5}}NOS]\]
C) \[Fe{{(CNS)}_{3}}\]
D) none of these
Correct Answer: B
Solution :
(i) \[Fe\,{{(CN)}_{3}}\] is red in colour and is formed when both N and S are present in organic compound (ii) \[\underset{\begin{smallmatrix} from\text{ }organic \\ compound \end{smallmatrix}}{\mathop{N{{a}_{2}}S}}\,\,\,+\underset{\begin{smallmatrix} sodium\text{ } \\ nitroprusside \end{smallmatrix}}{\mathop{N{{a}_{2}}\,[Fe\,{{(CN)}_{5}}NO]}}\,\xrightarrow{{}}\] \[\underset{violet\text{ }colour}{\mathop{[N{{a}_{3}}Fe\,{{(CN)}_{5}}NOS]}}\,\]
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