Question

The point defect which lowers the density of a crystal is ______.

Options

• Schottky defect

• Frenkel defect

• Schottky defect and Frenkel defect

• None of these

Answer 1

The point defect which lowers the density of a crystal is Schottky defect.

Explanation:

The point defect that lowers the density of a crystal is the Schottky defect. In a Schottky defect, an equal number of cations and anions are missing from their regular lattice sites, creating vacancies in the crystal structure.