explain how the periodic law relates to the number of valence electrons in each family. be sure to state the periodic law.

In each family the number of valence electrons remains same .

Let's take an example

Take Alkali metals family .

The common electronic configuration is

Hence valence electrons in each element is 1.

b is the correct

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.