Predict the hybridisation and geometry of `[CoCl_(4)]^(2-) and [Co(CN)_(4)]^(2-)`

Explanation

To predict the hybridization and geometry of the coordination compounds \([CoCl_4]^{2-}\) and \([Co(CN)_4]^{2-}\), we can follow these steps:

### Step 1: Determine the oxidation state of cobalt in both complexes.
- For \([CoCl_4]^{2-}\):
- Let the oxidation state of Co be \(x\).
- The charge of the complex is \(2-\).
- Each Cl is \(-1\), so:
\[
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