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ChemistryJEE Main 23 Jan 2026, Shift 1·Q9·MCQ·Easy–moderate

Coordination Compounds · Spectrochemical series tetrahedral splitting

Given below are two statements :

Statement I : [CoBrX4]X2−\ce{[CoBr4]^{2-}} ion will absorb light of lower energy than [CoClX4]X2−\ce{[CoCl4]^{2-}} ion.

Statement II : In [CoIX4]X2−\ce{[CoI4]^{2-}} ion, the energy separation between the two set of d-orbitals is more than [CoClX4]X2−\ce{[CoCl4]^{2-}} ion.

In the light of the above statements, choose the correct answer from the options given below :

  1. (1)Both Statement I and Statement II are false
  2. (2)Statement I is true but Statement II is false
  3. (3)Statement I is false but Statement II is true
  4. (4)Both Statement I and Statement II are true

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See the full 23 Jan 2026, Shift 1 paper