Which type of defect has the presence of cations in the interstitial sites ?

Options

A. Frenkel defect
B. Metal deficiency defect
C. Schottky defect
D. Vacancy defect

Explanation

To determine the type of defect that involves the presence of cations in the interstitial sites, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Crystal Structure**:
- In a typical ionic crystal like sodium chloride (NaCl), the structure consists of alternating cations (Na⁺) and anions (Cl⁻) arranged in a regular lattice.

2. **Identifying Cation and Anion**:
...