Crystal Lattice Formation in Ionic Crystals

What is a crystal lattice formed by positive and negative ions called?

A. ionic crystal

B. macromolecular crystal

C. magnetic crystal

D. metallic crystal

Answer: A. ionic crystal

Explanation: Crystal lattice is the ordered arrangement of molecules in a crystal. There are different ways in which molecules in a crystal can be arranged. When ions in a crystal are arranged in such a way that opposite charges are aligned and held together by an electrostatic force of attraction, this formation is known as an ionic crystal.

Crystal lattice formation plays a crucial role in the structure and properties of ionic crystals. When positive and negative ions come together in an ionic crystal lattice, they form a repeating three-dimensional pattern.

Each positive ion is surrounded by negative ions and vice versa, creating a stable structure. The electrostatic forces of attraction between these ions hold the crystal lattice together, giving rise to the characteristic properties of ionic compounds.

One key feature of ionic crystals is their strong electrostatic interactions, which result in high melting and boiling points. These crystals are typically very brittle due to the rigid nature of their lattice structure.

Furthermore, the arrangement of ions in an ionic crystal lattice affects its electrical conductivity. While ionic compounds do not conduct electricity in their solid state, they can become conductive when melted or dissolved in a liquid medium.

In conclusion, the formation of a crystal lattice by positive and negative ions to create an ionic crystal is a fundamental concept in solid-state chemistry. Understanding the structure and properties of these crystals is essential for various applications in materials science and technology.

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