Why is lathanide and actinide not part of the periodic table?

Besides the periodic table, an electron chart of the elements exists. The periodic table shows the broad outline. The electron chart goes into greater detail. The periodic table lists elements according to electrons in their outer shell. As elements get more massive they get more protons and electrons. Each time they add a proton, they jump one notch in the periodic table. When they add the electron, it is a valence electron and it affects the chemical properties. There comes a point when elements start adding electrons when the electrons are not added to the outer shell with the other electrons in the valence shell. The chemical properties do not change as the elements get heavier. It is extremely difficult to use chemistry to separate the elements in that group. If you had an electron chart, you would see the electrons followed a different pattern. That is why the lanthanides and actinides are set apart from the other elements on the periodic table. According to their chemical properties, they would all need to be put into one box.