JEE Main 2019 (Online) 10th January Morning Slot | Coordination Compounds Question 222 | Chemistry

Homoleptic octahedral complexes of a metal ion 'M³⁺' with three monodenate ligands L₁, L₂ and L₃ adsorb wavelenths in the region of green, blue and red respectively. The increasing order of the ligands strength is :

L₃ < L₁ < L₂

L₃ < L₂ < L₁

L₁ < L₂ < L₃

L₂ < L₁ < L₃

JEE Main 2019 (Online) 9th January Evening Slot

MCQ (Single Correct Answer)

-1

The complex that has highest crystal field splitting energy ($$\Delta $$), is :

[Co(NH₃)₅(H₂O)]Cl₃

K₂[CoCl₄]

[Co(NH₃)₅Cl]Cl₂

K₃[Co(CN)₆]

JEE Main 2019 (Online) 9th January Morning Slot

MCQ (Single Correct Answer)

-1

Two complexes [Cr(H₂O)₆]Cl₃ (A) and [Cr(NH₃)₆]Cl₃ (B) are violet and yellow coloured, respectively. The incorrect statement regarding them is :

$$\Delta $$₀ values of (A) and (B) are calculated from the energies of violet and yellow light, respectively

both are paramagnetic with three unpaired electrons

both absorb energies corresponding to their complementry colors.

$$\Delta $$₀ value for (A) is less than that of (B).

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