Kapil Kumar Wadhwa Inorganic Chemistry Pdf Best 🎯 Easy

Example 2 — Coordination chemistry (calculation) Problem: [Fe(CN)6]4– has Fe in which oxidation state and what is its d‑electron count? Is it paramagnetic or diamagnetic (CN– is strong field)? Approach: CN– is −1 each → total ligand charge −6; complex overall −4 → metal charge = +2 → Fe2+. Fe2+ ground state electronic config: d6. With strong‑field CN–, pairing occurs → low‑spin d6 → diamagnetic (no unpaired electrons).