The complex containing CN - ligands exhibits yellow color and the complex containing H 2 O ligands exhibits blue or green color, the reason to be interpreted. Concept Introduction: Origin of color: The coordination compound exhibit color due to d-d transitions. Absorption of wavelength from visible region which excites electron from the lower energy level to the higher energy level transmits the complementary color. Thus, the coordination compound looks colored. Spectrochemical series: The list of ligands arranged in an ascending order of (Δ) (the splitting of d-orbitals in presence of various ligands). → I - < Br - < SCN - < Cl - < S 2- < F - < OH - < O 2- < H 2 O < NCS - < edta 4- < NH 3 < en < NO 2- < CN - < CO weak-field increasing(Δ) strong-field ligands ligands Crystal field splitting: The energy gap between the splitting of d-orbitals of the metal ion in presence of ligands is known as the crystal field splitting (Δ) . The magnitude of (Δ) is depends on the nature of metal ions and the ligands.
The complex containing CN - ligands exhibits yellow color and the complex containing H 2 O ligands exhibits blue or green color, the reason to be interpreted. Concept Introduction: Origin of color: The coordination compound exhibit color due to d-d transitions. Absorption of wavelength from visible region which excites electron from the lower energy level to the higher energy level transmits the complementary color. Thus, the coordination compound looks colored. Spectrochemical series: The list of ligands arranged in an ascending order of (Δ) (the splitting of d-orbitals in presence of various ligands). → I - < Br - < SCN - < Cl - < S 2- < F - < OH - < O 2- < H 2 O < NCS - < edta 4- < NH 3 < en < NO 2- < CN - < CO weak-field increasing(Δ) strong-field ligands ligands Crystal field splitting: The energy gap between the splitting of d-orbitals of the metal ion in presence of ligands is known as the crystal field splitting (Δ) . The magnitude of (Δ) is depends on the nature of metal ions and the ligands.
Solution Summary: The author explains that the coordination compound exhibits color due to d-d transitions. Absorption of wavelength from visible region which excites electron transmits the complementary color.
Interpretation: The complex containing CN- ligands exhibits yellow color and the complex containing H2O ligands exhibits blue or green color, the reason to be interpreted.
Concept Introduction:
Origin of color: The coordination compound exhibit color due to d-d transitions. Absorption of wavelength from visible region which excites electron from the lower energy level to the higher energy level transmits the complementary color. Thus, the coordination compound looks colored.
Spectrochemical series: The list of ligands arranged in an ascending order of (Δ)(the splitting of d-orbitals in presence of various ligands).
Crystal field splitting: The energy gap between the splitting of d-orbitals of the metal ion in presence of ligands is known as the crystal field splitting (Δ). The magnitude of (Δ) is depends on the nature of metal ions and the ligands.
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