Group 7 – The Halogens

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Chemical Properties

- All halogens form diatomic molecules, that is they go around in pairs e.g. I2

- The halogens are reactive elements, with reactivity decreasing down the group.

- The larger atoms are less reactive as it is harder for them to capture an electron.

- Halogen compounds are called halides. Chlorine forms chlorides, bromine forms bromide etc.

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