Mathematics, 16.07.2019 08:00 AdamFrost

Asap! 20 points brainliest if right elements in the same ? have the same number of valence electrons. elements in the same ? have the same number of electron shells. metallic elements become ? reactive as you move left to right in a period. metallic elements become ? reactive as you move top to bottom in a group.

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Asap! 20 points brainliest if right elements in the same ? have the same number of valence electro...