Answer: 1.73 BM.
- A 3.87 BM
- B 1.73 BM
- C 4.90 BM
- D 5.92 BM
Correct answer: B. 1.73 BM
Explanation: Fe<sup>3+</sup> is d<sup>5</sup>; CN<sup>-</sup> is a strong field ligand giving a low-spin t<sub>2g</sub><sup>5</sup> arrangement with 1 unpaired electron. mu = sqrt(1(1+2)) = 1.73 BM.
The three common coordination geometries: octahedral (6 ligands), tetrahedral (4 ligands), and square planar (4 ligands in one plane).
Concept context
Study of compounds where a central metal atom is bonded to surrounding ligands. Covers nomenclature, types of isomerism, bonding theories (VBT, CFT), and applications in medicine, photography, and industry.