What is the relationship between the observed colour of a coordination complex and the wavelength of light absorbed by it?
- AThe observed colour is the same as the absorbed wavelength.
- BThe observed colour is the complementary colour of the absorbed wavelength.
- CThe observed colour is independent of the absorbed wavelength.
- DThe observed colour is always the shortest wavelength of the visible spectrum.
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Which one is correct for a high spin complex?
The Crystal Field Stabilisation Energies $(CFSE)$ of high spin and low spin $d^6$ metal complexes in terms of $\Delta_o$,respectively are
DifficultKVPY 2011
View Solution$A$ transition metal $(M)$ among $Mn, Cr, Co$ and $Fe$ has the highest standard electrode potential $(M^{3+} / M^{2+})$. It forms a metal complex of the type $[M(CN)_6]^{4-}$. The number of electrons present in the $e_g$ orbital of the complex is $.........$
Simplified absorption spectra of three complexes $(i), (ii)$ and $(iii)$ of $M^{n+}$ ion are provided below; their $\lambda_{max}$ values are marked as $A, B$ and $C$ respectively. The correct match between the complexes and their $\lambda_{max}$ values is
$(i)$ $[M(NCS)_6]^{(-6+n)}$
$(ii)$ $[MF_6]^{(-6+n)}$
$(iii)$ $[M(NH_3)_6]^{n+}$
$(i)$ $[M(NCS)_6]^{(-6+n)}$
$(ii)$ $[MF_6]^{(-6+n)}$
$(iii)$ $[M(NH_3)_6]^{n+}$
DifficultJEE MAIN 2020
View SolutionWrite a note on crystal field theory.
Medium
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