Magetic moment of `[CoI_(4)]^(2-)` is 3.8BM Using valence bond approach predict the structure of `[CoI_(4)]^(2-)` .

Explanation

To determine the structure of the complex ion \([CoI_4]^{2-}\) using the valence bond approach, we can follow these steps:

### Step 1: Determine the Oxidation State of Cobalt
Let the oxidation state of cobalt be \(x\). The four iodide ions contribute a total charge of \(-4\) (since each iodide ion has a charge of \(-1\)). The overall charge of the complex is \(-2\).

The equation can be set up as:
\[
x + 4(-1) = -2
...