The complex FeL₆²⁺, where L is a neutral ligand, is known to be diamagnetic. How many d electrons are there in this complex ion? A) 7 B) 8 C) 6 D) 4 E) 5

Question

Quizplus · Accepted Answer

The complex is diamagnetic, which means that all the electrons are paired up in the d orbitals. The coordination number of the central Fe atom is 6 (₆²⁺), and the electronic configuration of Fe in the +2 state is [Ar]3d6. The ligands L, S, U, and P do not cause any splitting of the d orbitals, so all the electrons are in the same energy level and paired up. Therefore, there are 6 d electrons.

The Complex FeL62+, Where L Is a Neutral Ligand, Is

The Complex FeL₆²⁺, Where L Is a Neutral Ligand, Is