How are ions arranged in an ionic compound?
They form a giant three-dimensional lattice of positive and negative ions in a regular repeating pattern, not separate molecules.
AQA GCSE Combined Science: Trilogy (8464) — Chemistry — Higher · 5.2.2.3
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How are ions arranged in an ionic compound?
They form a giant three-dimensional lattice of positive and negative ions in a regular repeating pattern, not separate molecules.
What is ionic bonding in a giant ionic lattice?
Strong electrostatic attraction between oppositely charged ions, acting in all directions throughout the lattice.
Name a typical compound that forms a giant ionic lattice.
Sodium chloride.
Why do ionic compounds have high melting and boiling points?
A large amount of energy is needed to overcome the strong electrostatic attractions between oppositely charged ions in the lattice.
What must a substance contain to conduct electricity?
Charged particles that can move.
Why does a solid ionic compound conduct electricity poorly?
Its ions are fixed in place and cannot move.
Why does an ionic compound conduct electricity when molten or dissolved in water?
Its ions can move in these states.