AP EAMCET · Chemistry · Coordination Compounds
The wavelengths of light absorbed by the complexes \(\left[\mathrm{Ni}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+},\left[\mathrm{Ni}(\mathrm{en})_3\right]^{2+},\left[\mathrm{Ni}\left(\mathrm{H}_2 \mathrm{O}\right)_4 \mathrm{en}\right]^{2+}\) are \(\lambda_1, \lambda_2, \lambda_3\) respectively. The correct order of wavelengths is
- A \(\lambda_1 > \lambda_2 > \lambda_3\)
- B \(\lambda_3 > \lambda_2 > \lambda_1\)
- C \(\lambda_1 > \lambda_3 > \lambda_2\)
- D \(\lambda_2 > \lambda_3 > \lambda_1\)
Answer & Solution
Correct Answer
(C) \(\lambda_1 > \lambda_3 > \lambda_2\)
Step-by-step Solution
Detailed explanation
The wavelength of the light absorbed by the complexes \(\propto \frac{1}{\text { strength of ligands }}\). Strength of ligand is en \( > \mathrm{H}_2 \mathrm{O}\). Hence, energy absorbed would be in order of…
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