FINISHED_Final_Notebook_Jones

Ionization Energy
Define Ionization Energy: The energy required to remove the most loosely bound electron from an electron (the valence
electron).
More Ionization
Energy Required
to Remove
Electron
More Ionization Energy
Required to Remove Electron
Explanation:
As you move laterally across the chart, more ionization energy is required to remove an electron because, the
greater amount of mass, the greater the gravitational pull on the electrons. As you move vertically along the periodic
table, the amount of ionization energy required increases as you go up. This is because the higher the number of
energy levels, the less gravity has an effect on the electrons in the outermost energy level, or the valence shell.
The atom that requires the greatest amount of ionization energy is Helium, because it only has 1 energy level and
has the largest mass for that period. Francium requires the least amount of ionization energy, because it is in the
7th period (has 7 energy levels) and has the least amount of mass (located on the far left of the table).
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