Calculate the crystal field stabilization energy and spin only magnetic moment for the following configuration of octahedral complexes.
(i) `d^(3)` (in weak as well as strong ligand field)
(ii) `d^(5)` (in weak as well as strong ligand field)
(iii) `d^(7)` (in weak ligand field)
(iv) `d^(9)` (in weak as well as strong ligand field)

Explanation

To solve the problem of calculating the Crystal Field Stabilization Energy (CFSE) and the spin-only magnetic moment for the given configurations of octahedral complexes, we will follow a systematic approach for each configuration.

### Step-by-Step Solution:

#### (i) For `d^(3)` Configuration:

1. **Weak Field Ligand:**
- Electronic configuration: \( t_{2g}^3 \)
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