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Sahiba Naqvi posted an Question
July 18, 2021 • 18:35 pm 30 points
  • IIT JAM
  • Chemistry (CY)

26 solution of complex [co(nh,),1, [co(h,o)j*, [cocl]are coloured one is pink, another is yellow and third is blue. assign proper colour. (a) yellow, pink, blue

26 Solution of complex [Co(NH,),1, [Co(H,O)J*, [CoCL]are coloured one is pink, another is yellow and third is blue. Assign proper colour. (a) Yellow, Pink, Blue (b) Yellow, Blue, Pink (c) Pink, Yellow, Blue (d) Blue, Pink, Yellow 127. Comnlex ITiH O 3#akoaehn

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    Priyanshu kumar best-answer

    option A is correct Explanation:- Ligand strength order is Nh3>H2O>Cl Strong-field ligands cause a large split in the energies of d orbitals of the central metal atom and transition metal coordination compounds with these ligands are typically yellow, orange, or red because they absorb higher-energy violet or blue light. Coordination compounds of transition metals with weak-field ligands are often blue-green, blue, or indigo because they absorb lower-energy yellow, orange, or red light.

  • Arka ghosh

    i think option a. As strong field ligand will caused more splitting of d orbital as a result that complex will absorb light of higher frequency and shows the complementary colour

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