Which statement about the elements in Group VII is incorrect?
- A$\text{Br}_2$ is less reactive than $\text{I}_2$.
- B$\text{Cl}_2$ is used for water treatment.
- C$\text{F}_2$ is a covalent molecule.
- D$\text{I}_2$ forms a purple vapour when warmed.
Chemistry 0620 · IGCSE · Group VII properties