What will be the correct order for the wavelengths of absorption in th

1.	What will be the correct order for the wavelengths of absorption in the visible region for the following : [Ni(NO2)6]4-, [Ni(NH3)6]2+, [Ni(H2O)6]2+
Answer» The order of the ligand in the spectrochemical series is H₂O < NH₃ < NO₂^-. Hence the wavelength of the light observed will be in the order : [Ni(H₂O)₆]²⁺ < [Ni(NH₃)₆]²⁺ < [Ni(NO₂)₆]^4- Thus, the wavelength of light absorbed (E = \(\frac{hc}{\lambda}\) ) will be in the opposite order : [Ni(H₂O)₆]²⁺ > [Ni(NH₃)₆]²⁺ > [Ni(NO₂)₆]^4-

What will be the correct order for the wavelengths of absorption in the visible region for the following : [Ni(NO2)6]4-, [Ni(NH3)6]2+, [Ni(H2O)6]2+

Answer»

The order of the ligand in the spectrochemical series is H₂O < NH₃ < NO₂^-.

Hence the wavelength of the light observed will be in the order :

[Ni(H₂O)₆]²⁺ < [Ni(NH₃)₆]²⁺ < [Ni(NO₂)₆]^4-

Thus, the wavelength of light absorbed (E = \(\frac{hc}{\lambda}\) ) will be in the opposite order :

[Ni(H₂O)₆]²⁺ > [Ni(NH₃)₆]²⁺ > [Ni(NO₂)₆]^4-