The CORRECT order of Δo (the octahedral crystal field splitting of d orbitals) values for the following anionic metal complexes isa)[Ir(CN)6]3-

Question

The CORRECT order of &Delta;o (the octahedral crystal field splitting of d orbitals) values for the following anionic metal complexes isa)[Ir(CN)6]3- < [Rh(CN)6]3- < [RhI6]3- < [CoI6]3-b)[CoI6]3- < [RhI6]3- < [Rh(CN)6]3- < [Ir(CN)6]3-c)[CoI6]3- < [Rh(CN)6]3- < [RhI6]3- < [Ir(CN)6]3-d)[Ir(CN)6]3- < [CoI6]3-< [Rh(CN)6]3- < [RhI6]3-Correct answer is option 'B'. Can you explain this answer?

Answer

The steps in the scientific method is:

1. Identify a problem or question
2. Conduct background research
3. Formulate a hypothesis
4. Design and conduct experiments to test the hypothesis
5. Collect and analyze data
6. Draw conclusions
7. Communicate findings and repeat the process if necessary

Answer

The correct answer for your question is option' B'

Reason:-

The magnitude of splitting (∆0) depends on the strength of the ligands.

Strong field ligands=[ Greater splitting]
Weak field ligands =[ Lesser splitting]

This shows that Cyanide will be stronger and has higher ∆o than iodide ligand. And it will almost conform the answer B.

Note :- magnitude of splitting increases as we move down the group. (3d < 4d='' />< />

Rh =4d7. Ir=5d7.

:- Ir > Rh .

Hope this will clears you out.

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