Two models show the same regular, repeating arrangement of positive and negative ions in an ionic solid. Model P includes sticks joining selected neighbouring ions. Model Q does not include sticks.
Why does Model Q give a more accurate impression of the directions in which ionic bonding acts?
Each ion attracts all the oppositely charged ions around it, but the sticks in Model P suggest attraction only along certain lines
Each ion is held in place by solid rods to every neighbour, but Model P has too few sticks to represent all of these rods
Each ion attracts only the ions with the same charge as itself, but the sticks in Model P join ions with opposite charges
Delocalised electrons move between the ions in every direction, but the sticks in Model P suggest they move only along certain lines
98 exam-style questions on AQA GCSE Chemistry 2.1 Chemical bonds, ionic, covalent and metallic, covering 2.1.1 Chemical bonds, 2.1.2 Ionic bonding, 2.1.3 Ionic compounds, 2.1.4 Covalent bonding, and 2.1.5 Metallic bonding. Each one has a worked solution and a mark scheme showing where the marks go.