Coordination CompoundHardBloom L3

Question

In the complex FeK2[Fe(CN)6],

Options

A.Both Fe atoms are in the same oxidation state.
B.Both Fe atoms are in different oxidation state.
C.The coordination number of ion is 4.
D.The complex is a high spin complex.

Solution

Sol. FeK2[FeCN6]

Case – 1 CMA is Fe+3

⇒ Charge on complex is = –3

⇒ FeK2 = +3

x + 2 = +3

x = +1

Case – 2 CMA is Fe+2

⇒ Charge on complex is = –4

⇒ FeK2 = +4

x + 2 = +4

x = +2

so case 2 is valid

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