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24 September, 03:44

How to refer to periodic table in order to predict the number of valence electrons?

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  1. 24 September, 06:18
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    You can have a general rule according to the group number. Elements in group I will have 1 valence electron, elements in the group two will have two valence electrons in the group 3 they will have three valance electrons and so on and two group eight
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