The Halogens
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The halogens are a family of elements in group 7 (aka 17) of the periodic table. in this video, you can see how reactive the halogens can be.
you can also see the characteristic colours of:
- chlorine; a pale green gas
- bromine; a volatile orange-brown liquid.
- iodine; a shiny grey metallic-looking solid with a purple vapour.
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chlorine has a wide variety of uses
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