Final answer:
The position on the periodic table can provide information about the energy of emitted photons. The trends observed are that ionization energy increases from left to right across a period and decreases as you move down a group.
Step-by-step explanation:
The position of an element in the periodic table can provide information about its energy of the photons that are emitted. One trend that can be observed is that as you move from left to right across a period, ionization energy increases.
This means that it requires more energy to remove an electron from the outer shell of elements on the right side of the periodic table compared to those on the left side. Another trend is that as you move down a group, ionization energy decreases. This occurs because the electron shells get further from the nucleus, making it easier to remove an electron.