The spin only magnetic moment of `[MnBr_(4)]^(2-)` is 5.9 BM. Predict the geometry of the complex ion.

Explanation

To predict the geometry of the complex ion \([MnBr_4]^{2-}\) based on its spin-only magnetic moment of 5.9 BM, we can follow these steps:

### Step-by-Step Solution

1. **Understanding Magnetic Moment**:
The magnetic moment (\(\mu\)) is given by the formula:
\[
\mu = \sqrt{N(N + 2)}
...