同じグループ内の要素が同じように動作するのはなぜですか?
Elements in the same group have similar chemical behaviors.
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Elements with similar properties tend to be in the same column. Valence electrons!
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Why do elements in the same group have similar physical and chemical properties?
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Elements in the same group have similar physical and chemical properties. Groups IA (1), 2A (2), 7A…
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