Key term for Edexcel GCSE Chemistry, used in Group 0.
An element found in Group 7 of the periodic table, which exists naturally as a diatomic molecule (e.g., , , ).
Halogen appears in Edexcel GCSE Chemistry revision content for Groups in the Periodic Table, especially Group 0 and Suggested Practicals.
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Groups in the Periodic Table
Group 7 • Relative Reactivity of Halogens
