
Concept explainers
The absorption maximum for the complex ion [Co(NH3)6]3+ occurs at 470 nm. (a) Predict the color of the complex and (b) calculate the crystal field splitting in kJ/mol.
- a)

Interpretation: The color of the complex is predicted and the crystal field splitting to be calculated.
Concept Introduction:
Crystal field splitting: The splitting of d-orbitals in the presence of ligands is known as crystal field splitting.
Spectrochemical series: The list of ligands arranged in an ascending order of
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
To Identify: The color of the complex is predicted and the crystal field splitting to be calculated.
Answer to Problem 23.36QP
The observed color of the complex
Explanation of Solution
Predict the color of the complex
Given information: Wavelength of the incident light is
In complex ion
- b)

Interpretation: The color of the complex is predicted and the crystal field splitting to be calculated.
Concept Introduction:
Crystal field splitting: The splitting of d-orbitals in the presence of ligands is known as crystal field splitting.
Spectrochemical series: The list of ligands arranged in an ascending order of
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
To Identify: The color of the complex is predicted and the crystal field splitting to be calculated.
Answer to Problem 23.36QP
The calculated value of crystal field splitting is
Explanation of Solution
Calculate value of crystal field splitting.
In complex ion
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