Question

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

Answer 1

Dear Student..
There are 18 groups in periodic table & each group is a independent group. All the elements present in a group have same electronic configuration of the atoms.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

Regards.