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14 November, 20:26

All elements have same number of valence electrons and similar properties

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  1. 15 November, 00:04
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    Groups

    Explanation:

    Groups (row going up and down) All have the same amount of valence electrons) Ex: First group the alkali metals all have 1 valence electron and are all very highly reactive.

    The only ones that this rule does not work for is the smaller column in the middle called transitional metals and the amount of valence electron that each one has differs
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