Group 7, The Halogens/ Brief outline on halides

My teacher asked me to write a brief outline/ summary on the halogens and halides since we recently covered the topic, thought I may aswell share it on here aswell!

If you have the AS AQA Chemistry book this will be good for you!!

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  • Created by: Sarah
  • Created on: 11-03-13 21:13

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Group 7, The Halogens


The Halogens are Group 7 on the Periodic Table (highlighted in green), as you would expect:

The size of the atoms increase down the group due to the elements gaining an extra
filled main level of electrons.
Atomic (covalent) radius increases down the group due to…

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Halide ions can act as reducing agents; in these reactions the halide ions lose (donate)
electrons and become halogen molecules. There is a trend in the reducing ability which is
linked to the size of the ions. The greater the size of the ion, the more easily an electron is…

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