Chemistry GCSE
Group 7 trends
What Group 7 trends means in Chemistry GCSE, as defined for AQA.
Definitions of Group 7 trends
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Reference: AQA
Down the group, atomic radius and shielding increase, so the attraction for an incoming electron decreases and reactivity decreases.
The further down the group an element is, the higher its relative molecular mass, melting point and boiling point.
Topics that use Group 7 trends
- Group 7 (AQA GCSE)
Related terms
- Diatomic molecules
- Displacement reactions
- Group 7 reactivity
- Halide salts
- Halogens
- Intermolecular forces and physical states
- Ionic versus covalent bonding
- Non-metal character of the halogens
Using Group 7 trends in the exam
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