In this episode, we will discuss halogens.Halogens, also known as Group 7 elements, possess seven outer electrons which makes them highly reactive as they readily gain one electron to achieve a stable full outer shell. In their elemental state, halogens exist as diatomic molecules. They commonly form salts when reacting with metals by accepting an electron. A key trend within the group is that reactivity decreases as you move down the periodic table due to increasing atomic size and reduced nuclear attraction for an additional electron.Don't miss out on subscribing for more educational content tailored to help you succeed in your exams. Perfect for AQA, OCR, Edexcel, CIE and WJEC exam boards.⁠Click here to see all of our GCSE Chemistry content!

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