Question

element in the same group have similar____.​

Answer 1

Answer:

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.

Answer 2

Explanation:

Chemical properties are dependent on the valence electrons.

In the same group, every element posses the same no. of valence electrons.

In periods, valence electrons charge from one element to another. That's why elements in the same group have similar chemical properties.