AS 1.5 Solid Structures Flashcards
1
Q
What is the purpose for the structure of ionic crystals?
A
They are both made up of oppositely charged ions packed around each other, this maximises attraction between the ions and minimises repulsion, ensuring maximum bond energy.
2
Q
NaCl, sodium chloride structure.
A
Each cation is surrounded by six anions and each anion is surrounded by six cations.
3
Q
CsCl, caesium chloride.
A
The number surrounding each is eight,this is because the Cs+ cation is larger than Na+, so it has more room to accommodate a greater number of anions.
4
Q
Diamond
A
The tetrahedral strong covalent arrangement build up a 3-D structure.
5
Q
Graphite
A
Only three bonds are made by each carbon atom, making hexagonal layers that are held together by weak forces.
