why elements of the same group have similar chemical properties
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Elements in the same group have similar properties because they have the same number of valence electrons in their outermost shell. Elements in the same period have different properties because the number of valence electrons in their outermost shells differ.
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Elements in the same group have similar properties because they havethe same number of valence electrons in their outermost shell. Elements in the same period have differentproperties because the number of valence electrons in their outermost shells differ.
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