On the basis of valence bond theory, explain geometry, nature of hybridisation, magnetic property and optical isomerism of `[Co(o x)_(3)]^(3-) and [CoF_(6)]^(3-)`.

Explanation

To solve the question regarding the coordination compounds \([Co(ox)_3]^{3-}\) and \([CoF_6]^{3-}\) based on valence bond theory, we will analyze each compound step by step, focusing on geometry, hybridization, magnetic properties, and optical isomerism.

### Step 1: Analyze \([Co(ox)_3]^{3-}\)

1. **Determine the oxidation state of cobalt**:
- Oxalate (\(ox\)) has a charge of \(-2\).
- The overall charge of the complex is \(-3\).
- Let the oxidation state of cobalt be \(x\).
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