Question 5(a)(i)
[Maximum number: 3]
This question is about iron.
Describe the bonding in a metallic element such as iron.
You may include a labelled diagram as part of your answer.
CAIE IGCSE Chemistry Metallic Lattice and Electron Sea
Practise drawing and labelling the metallic lattice model and defining the bond as attraction between positive ions and delocalised electrons.
How this is tested
- draw a regular lattice of positive metal ions surrounded by a sea of delocalised electrons
- label the ions and mobile electrons clearly and include appropriate ionic charges when asked
- state that metallic bonding is electrostatic attraction between positive ions and electrons