Write down the IUPAC names of the following complexes and also give stereochemistry and magnetic moment of the complexes :
(i) `[Co(NH_(3))_(5)Cl]Cl_(2)`
(ii) `[CrCl_(3)(py)_(3)]`
(iii) `k_(4)[Mn(CN)_(6)]`
(At. Nos. Cr=24, Mn=25, Co=27, py=pyridine)

Explanation

To solve the problem, we will break it down into three parts for each complex: the IUPAC name, the stereochemistry, and the magnetic moment.

### (i) Complex: `[Co(NH₃)₅Cl]Cl₂`

**Step 1: Determine the IUPAC Name**
- The complex contains five ammonia (NH₃) ligands and one chloride (Cl) ligand coordinated to cobalt (Co).
- The oxidation state of cobalt can be calculated as follows: let the oxidation state of Co be x. The overall charge of the complex is +2 (due to two Cl⁻ ions outside the coordination sphere). Therefore, we have:
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