Which of the following compounds is brown coloured [AFMC 2001]

1.	Which of the following compounds is brown coloured [AFMC 2001]
A.	\[Fe\left[ Fe{{\left( CN \right)}_{4}} \right]\]
B.	\[Fe\left[ Fe{{\left( CN \right)}_{6}} \right]\]
C.	\[F{{e}_{4}}\left[ Fe{{\left( CN \right)}_{6}} \right]\]
D.	\[{{K}_{2}}Fe\left[ Fe{{\left( CN \right)}_{6}} \right]\]
Answer» C. \[F{{e}_{4}}\left[ Fe{{\left( CN \right)}_{6}} \right]\]

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