Explain giving reasons whether `BH_(4)^(-) and H_(3)O^(+)` will have same or different geometry .

Explanation

To determine whether \( BH_4^{-} \) and \( H_3O^{+} \) have the same or different geometry, we need to analyze the steric number of the central atoms in both species. The steric number is calculated as the sum of the number of bond pairs and lone pairs of electrons around the central atom.

### Step-by-Step Solution:

1. **Identify the Central Atoms**:
- For \( BH_4^{-} \), the central atom is Boron (B).
- For \( H_3O^{+} \), the central atom is Oxygen (O).

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