| (b) Group 7 (halogens) – chlorine, bromine and iodine (Content in blue is not required for Double Award Science) |
| 2.5 know the colours, physical states (at room temperature) and trends in physical properties of these elements |
| 2.6 use knowledge of trends in Group 7 to predict the properties of other halogens |
| 2.7 understand how displacement reactions involving halogens and halides provide evidence for the trend in reactivity in Group 7 |
| 2.8C explain the trend in reactivity in Group 7 in terms of electronic configurations |
