AIIMS2011Chemistry-Coordination Chemistry
AIIMS 2011 Chemistry Ligand Field Theory MCQ Question
Type: MCQ-conceptual-Medium-Class 12
The wavelength of light absorbed is shortest in
A
[Co(NH₃)₅Cl]²⁺
B
[Co(NH₃)₅H₂O]³⁺
C
[Co(NH₃)₆]³⁺
D
[Co(en)₃]³⁺
Correct Answer
Option A
Detailed Explanation
As in complex [Co(NH3)6]3+ unpaired electrons are present, so it requires less energy for excitation. Thus, the wavelength of light absorbed will be highest (i.e., E ∝ 1/λ).
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