Introduction:
Giant ionic structures are a type of crystal lattice arrangement formed by ionic compounds. These structures consist of positively charged ions (cations) and negatively charged ions (anions) held together by electrostatic forces of attraction.

Explanation:
Ionic compounds are formed when atoms gain or lose electrons to achieve a stable electron configuration. The resulting cations and anions are attracted to each other due to their opposite charges, forming a giant ionic structure.

Properties of Giant Ionic Structures:
Giant ionic structures have several distinct properties that differentiate them from other types of lattices.

1. Ionic Lattice:
Ionic lattice is the name given to giant ionic structures. It refers to the arrangement of ions in a repeating pattern throughout the crystal lattice.

2. Crystal Lattice:
Crystal lattice is another term used to describe giant ionic structures. It refers to the regular three-dimensional arrangement of ions in a crystal lattice.

3. Electrostatic Forces:
The ions in a giant ionic structure are held together by strong electrostatic forces of attraction. The positive and negative charges of the ions create an attractive force that keeps them in place.

4. High Melting and Boiling Points:
Giant ionic structures have high melting and boiling points due to the strong forces of attraction between the ions. It requires a large amount of energy to overcome these forces and break the lattice structure.

5. Brittle Nature:
Ionic compounds are often brittle because the crystal lattice can easily be disrupted by external forces. When a force is applied, the layers of ions can shift and the lattice can break, resulting in a fracture.

6. Non-Conductive in Solid State:
Giant ionic structures do not conduct electricity in their solid state because the ions are held in fixed positions and cannot move. As a result, there are no free electrons or ions to carry the electric current.

Conclusion:
Giant ionic structures, also known as ionic lattices or crystal lattices, are formed by ionic compounds. These structures have distinct properties such as high melting points, brittleness, and non-conductivity in the solid state. The arrangement of ions in a repeating pattern throughout the crystal lattice is held together by strong electrostatic forces of attraction.