JEE Mains · Chemistry · STD 12 - 5. Co-ordination chemistry
Three complexes, \([CoCl(NH_3)_5]^{2+}\, (I)\), \([Co(NH_3)_5H_2O]^{3+}\, (II)\) and \([Co(NH_3)_6]^{3+}\, (III)\) Absorb light in the visible region. The correct order of the wavelength of light absorbed by them is
- A \((II) > (I) > (III)\)
- B \((III) > (II) > (I)\)
- C \((I) > (II) > (III)\)
- D \((III) > (I) > (II)\)
Answer & Solution
Correct Answer
(C) \((I) > (II) > (III)\)
Step-by-step Solution
Detailed explanation
As we known that Strong ligand \(\alpha \) \(CFSE\) \(\alpha \) \({E_{absorbed}}\,\propto \,\frac{1}{{{\lambda _{absorbed}}}}\) We have \(\mathop {{{[CoCl{{(N{H_3})}_5}]}^{2 + }}}\limits_{(I)} ,\) \(\mathop {{{[Co{{(N{H_3})}_5}{H_2}O]}^{3 + }}}\limits_{(II)} \) and…
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