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Why do elements in the same group have similar physical and chemical properties?

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asked Aug 21, 2017 in Chemistry by Kundan kumar (49,132 points) ● 34 ● 435 ● 1351

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answered Aug 21, 2017 by Vikash Kumar (144,729 points) ● 8 ● 11 ● 26
selected Aug 21, 2017 by Kundan kumar
 
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The physical and chemical properties of elements depend on the number of valence electrons. Elements present in the same group have the same number of valence electrons. Therefore, elements present in the same group have similar physical and chemical properties.

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