Group 7: Halogens

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The halogens are elements of great practical importance and chemical interest. In an AS course you have to understand how their chemical behaviour can be explained in terms of their electron configurations.

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Tutorials

• Sorted FAQs on Group 7: Halogens
• Hydrogen halides: audio tutorial
• ASTATINE (or ‘What’s that element just under iodine?)

Webguides

• Manufacture and uses of halogens

Recently Asked Questions

• Are there any ways to analyse flourine concentrations in water in a class lab? 260308
• Why does the density of the halogens increase as you go down Group 7? 280410
• 1. Why does silver chloride, bromide and iodide change colour when exposed to sunlight? 2. On exposure to sunlight does silver bromide turn yellow, or does no colour change occur at all? 3. On exposure to light does silver iodide turn grey? I'm not sure of the appropriate colours. Can you help me please. 280410

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Tests

• The halogens (AS)

updated: 12 May 2004