• The ions form a?lattice?structure?which is an evenly distributed?crystalline?structure
• Ions in a lattice are arranged in a?regular?repeating?pattern?so that positive charges cancel out negative charges
• Therefore the final lattice is overall electrically?neutral

Ionic solids are arranged in lattice structures

• Different types of?structure?and?bonding?have different effects on the?physical properties?of substances such as their?melting?and?boiling points,?electrical conductivity?and?solubility

Ionic bonding & giant ionic lattice structures

• Ionic compounds are?strong
  • The?strong electrostatic forces?in ionic compounds keep the ions strongly together
• They are?brittle?as ionic crystals can split apart
• Ionic compounds have?high melting?and?boiling?points
  • The strong electrostatic forces between the ions in the lattice act in all directions and keep them strongly together
  • Melting and boiling points increase with charge density of the ions due to the greater?electrostatic attraction?of charges
  • Mg²⁺O^2-?has a higher melting point than Na⁺Cl^-
• Ionic compounds are?soluble?in water as they can form?ion - dipole bonds
• Ionic compounds only?conduct?electricity?when?molten?or in?solution
  • When molten or in solution, the ions can freely move around and conduct electricity
  • In the solid state they’re in a fixed position and unable to move around

Characteristics of Giant Ionic Lattices compared to other Structures

Answer:

The correct answer is?Statement 4

• • The relatively high melting point, solubility in water and electrical conductivity when molten suggest that X is an?giant ionic structure
  • The low melting point of Y ?suggests that little energy is needed to break the lattice which corresponds to a?simple molecular structure. This is further supported by the low electrical conductivity and almost insoluble in water
  • Compound Z has a very high melting point which is characteristic of either metallic or giant molecular lattices, however since it conducts electricity, compound Z must be a?giant metallic lattice