3.Group 7 elements - Properties and Reactions
Introduce group seven elements (the halogens) and their properties. Show the reactions that occur between group seven elements and solutions - Explain why group seven are called the the halogens. Highlight trends within group seven- "seven electrons in the outer energy level" etc. expalin why some group seven elements are more reactive than others. show the bleaching ability of the halogens with dyes such as litmus.explain what is meant by diatomic molecules
องค์ประกอบ และปฏิกิริยา กลุ่ม 7
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