2(b) Group 7 (halogens) – chlorine, bromine and iodine

(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