A) \[N{{a}_{3}}Fe{{(CN)}_{6}}\]
B) \[N{{a}_{3}}[Fe{{(CN)}_{5}}NOSNa]\]
C) \[Fe{{(CNS)}_{3}}\]
D) none of these
Correct Answer: B
Solution :
With sodium nitroprusside solution, the sodium extraction gives a purple colour of sodium thionitro preside. \[\underset{\begin{smallmatrix} (present\,\,in \\ sodium\,\,extract) \end{smallmatrix}}{\mathop{N{{a}_{2}}{{S}_{(aq)}}}}\,+\underset{(sodium\,\,nitroprusside)}{\mathop{N{{a}_{2}}[Fe{{(CN)}_{5}}NO]}}\,\] \[\underset{\begin{smallmatrix} Purple\,\,colour \\ (Sodium\,\,thio\,\,nitro\,\,prusside) \end{smallmatrix}}{\mathop{\xrightarrow{{}}N{{a}_{4}}[Fe{{(CN)}_{5}}NOS]}}\,\]
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