Write down the IUPAC name for each of the following complexes and indicate the oxidation state, electronic configuration and coordination number. Also give stererochemistry and magnetic moment of the complex :
(i) `K[Cr(H_(2)O)_(2)(C_(2)O_(4))_(2)].3H_(2)O`
(ii) `CrCl_(3)(py)_(3)`
(iii) `K_(4)[Mn(CN)_(6)]`
(iv) `[Co(NH_(3))_(5)Cl]Cl_(2)`
(v) `Cs[FeCl_(4)]`.

Explanation

To solve the question, we will analyze each complex one by one, providing the IUPAC name, oxidation state, electronic configuration, coordination number, stereochemistry, and magnetic moment.

### (i) K[Cr(H₂O)₂(C₂O₄)₂].3H₂O

1. **IUPAC Name**: Potassium bis(oxalato)diaquachromate(III) trihydrate.
2. **Oxidation State**: The oxidation state of Cr is +3.
3. **Electronic Configuration**: The electronic configuration of Cr in +3 oxidation state is [Ar] 3d³.
4. **Coordination Number**: The coordination number is 6 (2 from water and 4 from oxalate ligands).
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