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CAIE IGCSE Chemistry Giant Ionic Lattice Structure

Practise describing giant ionic lattices as regular repeating arrangements of alternating positive and negative ions and interpreting lattice diagrams.

Syllabus
2026–2028
Course
Chemistry 0620

Exam points

  • describe a giant ionic lattice as a regular repeating arrangement of oppositely charged ions
  • complete or interpret a lattice diagram by alternating cations and anions throughout the pattern
  • identify a solid ionic substance as a giant lattice rather than a molecule or collection of atoms

2.4.5—Giant lattice structure of ionic question 1

[Maximum number: 1]

Fluorine is a Group VII element. Fluorine forms compounds with metals and non-metals.

Tetrafluoromethane and lead(II) fluoride are fluorides of Group IV elements. Some properties of tetrafluoromethane and lead(II) fluoride are shown in the table.

Table for Question 2.4.5—Giant lattice structure of ionic question 1 — CAIE IGCSE Chemistry

What type of structure does solid lead(II) fluoride have?

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