Ionic compounds consist of oppositely charged ions packed closely together in a regular pattern.
🤓 Consider this example:
1.37 Draw a diagram to represent the positions of the ions in a crystal of sodium chloride.
Sodium Chloride
Sodium chloride is made up of sodium ions and chloride ions packed in a regular pattern called a lattice.
🧐Each sodium ion is surrounded by 6 chloride ions and each chloride ions is surrounded by 6 sodium ions
Take a look at the other examples of ionic compounds👇
Calcium Fluoride
The lattice of Calcium Fluoride consists of calcium ions and fluoride ions.
🧐Each fluoride ion is surrounded by 4 calcium ions whereas each calcium ions is surrounded by 8 fluoride ions
Caesium Chloride
The lattice of Caesium Chloride comprises a cubic lattice of caesium ions interpenetrated by another cubic lattice of chloride ions.
🧐The 8 chloride ions lie at the corners of a cube (blue) which is placed in the middle of the caesium structure
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