How many unpaired electrons would you expect for the complex ion: [FeF₆]^3-? A) 0 B) 1 C) 3 D) 4 E) 5

Name: How many unpaired electrons would you expect for the complex ion: [FeF 6 ] 3- ? A) 0 B) 1 C) 3 D) 4 E) 5
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Question

Quizplus · Accepted Answer

The complex ion [FeF6]3- has Fe in the +3 oxidation state, which means it has a d5 electron configuration. Fluoride is a weak field ligand, so it does not cause pairing of electrons. Therefore, all five d electrons remain unpaired.

How Many Unpaired Electrons Would You Expect for the Complex