Chemistry - Coordination Chemistry Question with Solution | TestHub

The ligand CO is a strong field ligand, causing pairing of electrons in Cr(CO)₆. Cr is in the 0 oxidation state, with a d⁶ configuration. All electrons are paired, resulting in 0 unpaired electrons. Thus, the spin-only magnetic moment is 0 Bohr magnetons.

Magnetic moment formula: $\mu =\sqrt{n(n+2)}$ BM, where $n$ is the number of unpaired electrons.

For $n=0$, $\mu =0$ BM.