Summary A* GRADE AQA A-Level Chemistry: Inorganic - Group 7(17), the halogens (3.2.3)
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Unit 3.2.3 - Group 7, the halogens
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Unit 3.2.3 - Group 7, the halogens
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1. Group 7
F2: pale yellow gas
Cl2: green gas
Br2: red-brown liquid
I2: grey solid
electronegativity decreases
- larger atom: electrons further from nucleus + more shielding = decreased attraction to nucleus
boiling point increases
- more electrons: increasing VDW strength
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