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

Sol. FeK2[FeCN6] Case – 1 CMA is Fe+3⇒ Charge on complex is = –3⇒ FeK2 = +3x + 2 = +3x = +1 Case – 2 CMA is Fe+2⇒ Charge on complex is = –4⇒ FeK2 = +4x + 2 = +4x = +2so case 2 is valid

Coordination CompoundMediumBloom 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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