Elements of Group 17

At the end of this activity, students should be able to:
– write the electron configuration of Group 17 elements
– describe the trends in the size of atomic and ionic radii in elements of Group 17
– state the direction of changes in the melting point and the boiling point in Group 17
– discuss the relationship between the atomic structure and the physical properties of elements
– describe the trends in the reactivity of halogens
– explain why chlorine is more reactive than bromine
– state whether a reaction occurs between a molecule of a particular halogen and a simple ion of another halogen.