Match the list I and II, pick the correct matching from the...

Match the list I and II, pick the correct matching from the codes given below List I (a) $\left[\mathrm{Ag}(\mathrm{CN})_{2}\right]$ (b) $\left[\mathrm{Cu}\left(\mathrm{CN}_{4}\right)\right]^{3}$ (c) $\left[\mathrm{Cu}(\mathrm{CN})_{6}\right]^{3-}$ (d) $\left[\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}$ (e) $\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{-}$ List II 1. square planar and $1.73 \mathrm{BM}$ 2. linear and zero 3. octahedral and zero 4. tetrahedral and zero 5. octahedral and $1.73$ BM (a) a-4, b-2, c-5, d-3, e-1 (b) a-4, b-5, c-2, d-1, e-3 (c) a-2, b-4, c-5, d-1, e-3 (d) a-5, b-4, c-1, d-3, e-2

Match the list I and II, pick the correct matching from the codes given below
List I
(a) $\left[\mathrm{Ag}(\mathrm{CN})_{2}\right]$
(b) $\left[\mathrm{Cu}\left(\mathrm{CN}_{4}\right)\right]^{3}$
(c) $\left[\mathrm{Cu}(\mathrm{CN})_{6}\right]^{3-}$
(d) $\left[\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}$
(e) $\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{-}$
List II
1. square planar and $1.73 \mathrm{BM}$
2. linear and zero
3. octahedral and zero
4. tetrahedral and zero
5. octahedral and $1.73$ BM
(a) a-4, b-2, c-5, d-3, e-1
(b) a-4, b-5, c-2, d-1, e-3
(c) a-2, b-4, c-5, d-1, e-3
(d) a-5, b-4, c-1, d-3, e-2

Key Concepts

Coordination Complex

A coordination complex is a structure composed of a central metal atom or ion bonded to surrounding molecules or anions known as ligands. These complexes are fundamental in inorganic chemistry and display a wide variety of structural and electronic properties which affect their reactivity, color, and magnetism.

Molecular Geometry

Molecular geometry in coordination compounds refers to the spatial arrangement of the ligands around the metal center. Common geometries include linear, tetrahedral, square planar, and octahedral, each determined largely by the coordination number and steric or electronic demands of the ligands.

Magnetic Moments

Magnetic moment is a measure of the magnetism of a complex, which arises from the presence of unpaired electrons. It is typically expressed in Bohr magnetons (BM) and provides insight into the electron configuration, showing whether a complex is paramagnetic (with unpaired electrons) or diamagnetic (with all electrons paired).

Electronic Configuration and Oxidation States

Determining the electronic configuration of the metal in a coordination complex involves first assigning the oxidation state based on the charges of the ligands and the overall complex. The electron count then helps in predicting the magnetic behavior and preferred geometry of the complex.

Ligand Field Theory

Ligand field theory explains the bonding, color, and magnetic properties of transition metal complexes by considering the effect of ligand electric fields on the d-orbitals of the metal ion. This theory helps rationalize how different ligands, being strong or weak field, split the d-orbital energies, influencing whether a complex is high spin (more unpaired electrons) or low spin (fewer or no unpaired electrons).

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