An `AB_(2)` type structure is found in

Options

A. `NaCl `
B. `CaF_(2)`
C. `Al_(2)O_(3) `
D. `N_(2)O`

Explanation

To determine which compound exhibits an AB₂ type structure, we need to analyze the given options based on their ionic or molecular composition. An AB₂ structure implies that there is one central atom (A) surrounded by two identical atoms (B).

### Step-by-Step Solution:

1. **Understanding AB₂ Structure**:
- An AB₂ structure consists of one central atom (A) bonded to two surrounding atoms (B). This can be represented as A²⁺ + 2B⁻, where A is the central atom and B represents the surrounding atoms.

2. **Analyzing the Options**:
- **NaCl**:
- Composition: Na⁺ and Cl⁻.
- Structure: NaCl forms a face-centered cubic lattice and does not fit the AB₂ structure. Therefore, this option is incorrect.

- **CaF₂**:
- Composition: Ca²⁺ and F⁻.
- Structure: The formula can be represented as Ca²⁺ + 2F⁻, which fits the AB₂ structure (A = Ca, B = F). Therefore, this option is correct.

- **Al₂O₃**:
- Composition: Al³⁺ and O²⁻.
- Structure: The formula does not fit the AB₂ structure as it can be represented as 2Al³⁺ + 3O²⁻. Therefore, this option is incorrect.

- **N₂O**:
- Composition: N and O.
- Structure: The formula can be represented as 2N + O, which fits the A₂B structure (A = N, B = O). Therefore, this option is incorrect.

3. **Conclusion**:
- After analyzing all the options, the only compound that exhibits an AB₂ type structure is **CaF₂**.

### Final Answer:
The compound that exhibits an AB₂ type structure is **CaF₂**.