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2 March, 21:03

Elements are organized into groups / families according to their physical and chemical properties. Identify the elements that's belong to each family based on there number of valence electrons. Write the names and symbol for each element

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  1. 2 March, 22:32
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    1 valence - Alkali Metals: Li Lithium, Na Sodium, K Potassium

    2 valence - Alkaline Earth Metals: Be Beryllium, Mg Magnesium, Ca Calcium

    3 valence - Non-metals: B Boron, Al Aluminium

    4 valence - Non-metals: C Carbon, Si Silicon

    5 valence - Non-metals: N Nitrogen, P Phosphorus

    6 valence - Non-metals: O Oxygen, S Sulfur, Se Selenium

    7 valence - Halogens: F Fluorine, Cl Chlorine, Br Bromine

    8 valence - Noble Gases: He Helium, Ne Neon, Ar Argon
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