Iron(III) forms an octahedral complex with the ligand CN^-. How many unpaired electrons are in the d orbitals of iron? A)1 B)3 C)5 D)7 E)None of these choices are correct.

Question

Quizplus · Accepted Answer

Iron(III) has a d^5 electron configuration. In the presence of the strong field ligand CN^-, the electrons will pair up in the lower energy t2g orbitals, resulting in one unpaired electron.

Iron(III) Forms an Octahedral Complex with the Ligand CN-

Iron(III) Forms an Octahedral Complex with the Ligand CN^-