How many d electrons are in the iron ion of K₃[Fe(CN)₆]? A)3 B)5 C)6 D)7 E)4

Question

Quizplus · Accepted Answer

The iron ion in [Fe(CN)6] is in a +2 oxidation state because the cyanide ion (CN-) is a -1 charge and there are 6 of them, making the total charge of the ligands -6. To balance this, the iron must be +2 (since the overall charge of the complex is 0). Iron (Fe) in its elemental form has 6 d electrons (as it is in the 8th group and has 2 s electrons). When it loses 2 electrons to become Fe2+, these electrons are removed from the s orbital, leaving the d orbital with 6 electrons.

How Many D Electrons Are in the Iron Ion of K3[Fe(CN)6]

How Many D Electrons Are in the Iron Ion of K₃[Fe(CN)₆]