Group 7 (17), the Halogens (AQA A-Level Chemistry): Flashcards
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Electronegativity definition
Electronegativity definition
Ability of atom to attract bonding pair of electrons in a covalent bond
Electronegativity trend in Group 7
Electronegativity trend in Group 7
Decreases down the group
Why electronegativity decreases down Group 7
Why electronegativity decreases down Group 7
More shells → larger radius → more shielding → less attraction
Boiling point trend in Group 7
Boiling point trend in Group 7
Increases down the group
Why boiling points increase down Group 7
Why boiling points increase down Group 7
Larger molecules → more → stronger van der Waals forces
Oxidising ability trend in Group 7
Oxidising ability trend in Group 7
Decreases down the group
Strongest oxidising agent in Group 7
Strongest oxidising agent in Group 7
Fluorine
Reducing ability trend of halide ions
Reducing ability trend of halide ions
Increases down the group
Strongest reducing agent among halide ions
Strongest reducing agent among halide ions
Iodide ()
Why halide reducing power increases down group
Why halide reducing power increases down group
Larger ions → easier to lose electrons