Question

Explain why k3[fe(cn)6] is more stable than k4[fe(cn)6].

Answer 1

Answer:

in k3[fe(choken)6] the oxidation state of Fe is +3.

but in case of k4[Fe(cn)6] oxidation state of Fe is +2.

and the +3 oxidation state of Fe is more stable than the +2 oxidation state.because in +3 the electronic configuration is 3d5 4s0.

but in case of +2 the electronic configuration is 3d 6 4s0.

And the half filled electronic configuration is more stable than the incompletely filled electronic configuration.

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