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Chemistry Question on coordination compounds

The order of energy absorbed which is responsible for the color of complexes

  1. Ni(H2O)2(en)2]2+
  2. [Ni(H2O)4(en)]2+
  3. [Ni(en)3]2+
A

A > B > C

B

C > B > A

C

C > A > B

D

B > A > C

Answer

C > A > B

Explanation

Solution

Higher the no. of strong field ligand, more is the ∆o, more will be the energy absorbed by electrons, that further impart colour while jumping to lower energy orbitals.