What does the group number on the periodic table tell you?

The periodic table also has a special name for its vertical columns. Each column is called a group. The elements in each group have the same number of electrons in the outer orbital. Those outer electrons are also called valence electrons.

they both have a y in them

because of all the things that happen around the us, many people get into arguments which sadly could get physical, but we should actually make a change for that.