`[Co(CN)_(6)]^(3-)` and `[CoF_(6)]^(3-)` both are octahedral complexes. Then what is the difference between the two ?

Explanation

To differentiate between the two octahedral complexes `[Co(CN)_(6)]^(3-)` and `[CoF_(6)]^(3-)`, we can analyze their electronic configurations, hybridization, magnetic properties, and the nature of the ligands involved.

### Step-by-Step Solution:

1. **Identify the Oxidation State of Cobalt**:
- In both complexes, cobalt is in the +3 oxidation state.
- For `[Co(CN)_(6)]^(3-)`, the cyanide (CN) ligand has a charge of -1. Thus, with 6 CN ligands, the total charge contributed by ligands is -6. Therefore, the overall charge of the complex is -3, confirming Co is +3.
- Similarly, for `[CoF_(6)]^(3-)`, the fluoride (F) ligand also has a charge of -1. With 6 F ligands, the total charge is again -6, confirming Co is +3.
...