Coordination CompoundHard
Question
Given that the energy of the photons of different colours decreases in the order of v i b g y o r
(Violet > Indigo > Blue > Green > Yellow > Orange > Red) and that if complex absorbs a photon of low energy then it shows colour of high energy photon. If an ion, M2+, forms the complexes [M(H2O)6]2+, [MBr6]4-, and [M(en)3]2+. The colours of the complexes, thhe appropriate colour. (do not use the table of complementary colours for this questioough not necessarily in order, are green, red, and blue. Match the complexes with tn)
(Violet > Indigo > Blue > Green > Yellow > Orange > Red) and that if complex absorbs a photon of low energy then it shows colour of high energy photon. If an ion, M2+, forms the complexes [M(H2O)6]2+, [MBr6]4-, and [M(en)3]2+. The colours of the complexes, thhe appropriate colour. (do not use the table of complementary colours for this questioough not necessarily in order, are green, red, and blue. Match the complexes with tn)
Options
A.[MBr6]4- blue , [M(H2O)6]2+ green, [M(en)3]2+ red
B.[MBr6]4- green, [M(H2O)6]2+ blue, [M(en)3]2+ red
C.[MBr6]4- green, [M(H2O)6]2+ red, [M(en)3]2+ blue
D.[MBr6]4- red, [M(H2O)6]2+ green, [M(en)3]2+ blue
Solution
Order of crystal field splitting en > H2O > Br- so, more stronger ligand will absorb lower wavelength light and reflect back higher wavelength light.
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