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26 March, 15:36

Compare and contrast the elements in Group 1 and the elements in Group 17

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  1. 26 March, 18:18
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    7 electrons in each outer shell

    Group 17

    Most reactive

    Fluorine, Chlorine, Bromine, Iodine, Astatine

    Alkali Metals:

    1 electron is each outer shell

    Group 1

    Also reactive, but not as much as the halogens

    Lithium, Sodium, Potassium, Rubidium, Cesium, Francium
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