Which of the following species has tetrahedral geometry?

Options

A. `BH_(4)^(-)`
B. `NH_(2)^(-)`
C. `CO_(3)^(2-)`
D. `H_(3)O^(+)`

Explanation

To determine which of the given species has tetrahedral geometry, we will analyze the hybridization and molecular geometry of each species mentioned.

### Step-by-Step Solution:

1. **Identify the species**: The species we need to analyze are BH4^-, NH2^-, CO3^2-, and H3O^+.

2. **Analyze BH4^- (Boron Tetrahydride)**:
- Boron (B) has 3 valence electrons, and with the addition of one electron due to the negative charge, it has a total of 4 electrons.
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