Hard Practice — Advanced Set

Hard Practice — Chained Coordination Reasoning

Chain the logic: oxidation state $\to$ d-count $\to$ ligand-field strength $\to$ spin state $\to$ unpaired electrons / $\mu$ / geometry; count isomers and compute EAN and CFSE.

• $\mu=\sqrt{n(n+2)}$ BM; EAN $=Z-(\text{ox. state})+2(\text{CN})$.
• Strong field ($CN^-$, $CO$, $NH_3$) $\to$ low spin; weak field ($F^-$, $H_2O$, halides) $\to$ high spin.