Question

An ion leaves its regular site occupy a position in the space between the lattice sites is called

• A. Frenkel defect
• B. Schottky defect
• C. Impurity defect
• D. Vacancy defect

Hint:

Frenkel defects involve dislocations where atoms or ions move to interstitial sites within the crystal.

Answer 1

The Correct Option is A

Step 1: Types of defects in crystals.
A Frenkel defect occurs when an ion leaves its regular site and occupies a position in the space between the lattice sites.

Step 2: Conclusion.
Thus, the correct answer is option (A).

Final Answer: \[ \boxed{\text{(A) Frenkel defect}} \]