9.32 What will be the correct order for the wavelengths of absorption in the visible region for the following:
The order of the wavelength of absorption will be decided from the order of their CFSE values.
The CFSE values increase in the order :- H2O < NH3 < NO2 -
Hence, the order of wavelengths of absorption in the visible region is : [Ni(H2O)6]2+ > [Ni(NH3)6]2+ > [Ni(NO2)6]4-
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