Question

In the complex $K _{4}\left[ Fe ( CN )_{6}\right]$ identify the coordination sphere and the counter ion.

• A. $K ^{+}$coordination sphere; $\left[ Fe ( CN )_{6}\right]^{4-}$ counter ion
• B. $\left[ Fe ( CN )_{6}\right]^{4-}$ coordination sphere; $K ^{+}$counter ion
• C. $( CN )_{6}$ coordination sphere; $K ^{+}$counter ion
• D. None of the above

Answer 1

Answer: (B)

In the complex $K _{4}\left[ Fe ( CN )_{6}\right], K ^{+}$is the counter ion while coordination sphere is $\left[ Fe ( CN )_{6}\right]^{4-}$.