Studied by 7 peopleTrend in electronegativity of halogens
Decreases
More electrons so more energy levels atomic radius increases
More shielding
Nuclear charge does not negate/ similar
Oxidising ability
Decreases
When halogens react with H2SO4 what is produced by all
Misty/ steamy fumes
Acidic gas
How to test for hydrogen halide
Damp blue litmus paper bleaches red
What does Br oxidise H2SO4 to
SO2
To test for SO2
Potassium dichromate
Turns from orange to green
Note
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