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JEE Main202120 Jul 2021Morning ShiftChemistryCoordination CompoundsActual

The correct order of intensity of colors of the compounds is:

Options

  1. ANi ( CN ) 4 2 - > NiCl 4 2 - > Ni H 2 O 6 2 +
  2. BNi H 2 O 6 2 + > NiCl 4 2 - > Ni ( CN ) 4 2 -
  3. CNiCl 4 2 - > Ni H 2 O 6 2 + > Ni ( CN ) 4 2 -
  4. DNiCl 4 2 - > Ni ( CN ) 4 2 - > Ni H 2 O 6 2 +

Correct answer

C. NiCl 4 2 - > Ni H 2 O 6 2 + > Ni ( CN ) 4 2 -

Step-by-step solution

NiCl 4 2 - > Ni H 2 O 6 2 + > Ni ( CN ) 4 2 - Splitting energy order Δ t < Δ 0    < Δ sq Absorbed energy order NiCl 4 2 - < Ni H 2 O 6 2 + < Ni ( CN ) 4 2 - intensity of colour of compound NiCl 4 2 - > Ni H 2 O 6 2 + > Ni ( CN ) 4 2 -

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